A multi-channel charging system includes a power source supplying power, a transformer connected to the power source, a plurality of charging ports connected to the transformer and charging or discharging each object, a converter converting power between the power source and the transformer or between the object and the transformer, and a controller controlling the converter or each of the objects, wherein the controller transmits/receives a signal to or from each of the objects, controls power transmission/reception between each of the objects, or controls power transmission/reception between the power source and the objects.
The present invention relates to an initial driving device and method for a solid-state transformer, in which an internal capacitor of a solid-state transformer is charged using a battery already possessed, instead of a separate external power source, so as to reduce overall parts of the solid-state transformer to improve the system reliability. The initial driving device for the solid-state transformer according to the present invention comprises: an AC/DC converter which converts a grid power into a direct current; a high voltage conversion unit which converts the output of the AC/DC converter into a high voltage; a medium frequency transformer (MFT) which converts the output of the high voltage conversion unit into a low voltage; a low voltage conversion unit which converts the output of the MFT into a charging voltage of an electric vehicle or a battery; and a control unit which controls operations of the AC/DC converter, the high voltage conversion unit, the MFT, and the low voltage conversion unit.
H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
H02M 3/07 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des résistances ou des capacités, p. ex. diviseur de tension utilisant des capacités chargées et déchargées alternativement par des dispositifs à semi-conducteurs avec électrode de commande
The present invention relates to a composite charging system and method capable of producing charging power for an electric vehicle by utilizing hydrogen energy supplied to a hydrogen vehicle, and compositely connecting hydrogen energy with a power system to efficiently perform charging of the electric vehicle, and more flexibly coping with the use of energy.
The composite charging system according to the present invention comprises: a hydrogen charger which charges hydrogen into a vehicle; a hydrogen power supply system which generates and supplies power on the basis of hydrogen; a system power supply system which supplies power from a power system; an electric charger which charges the electric vehicle; and a battery power supply system which stores power supplied from the hydrogen power supply system and the system power supply system, and supplies the stored power to the electric charger.
A multi-channel charging system according to one embodiment may comprise: a power supply source for supplying power; a transformer connected to the power supply source; a plurality of charging ports, which are connected to the transformer and charge or discharge each object; a converter for converting power between the power supply source and the transformer or between the object and the transformer; and a control unit for controlling the converter or each object, wherein the control unit transmits/receives a signal to/from each object or can control the transmission/reception of power between the respective objects or control the transmission/reception of power between the objects and the power supply source.
B60L 53/67 - Commande de plusieurs stations de charge
B60L 53/24 - Procédés de chargement de batteries spécialement adaptées aux véhicules électriquesStations de charge ou équipements de charge embarqués pour ces batteriesÉchange d'éléments d’emmagasinage d'énergie dans les véhicules électriques caractérisés par des convertisseurs situés dans le véhicule utilisant le convertisseur de propulsion du véhicule pour la charge
H02M 3/22 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif
H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
The present invention relates to a composite charging system and method capable of producing charging power for an electric vehicle by utilizing hydrogen energy supplied to a hydrogen vehicle, and compositely connecting hydrogen energy with a power system to efficiently perform charging of the electric vehicle, and more flexibly coping with the use of energy. The composite charging system according to the present invention comprises: a hydrogen charger which charges hydrogen into a vehicle; a hydrogen power supply system which generates and supplies power on the basis of hydrogen; a system power supply system which supplies power from a power system; an electric charger which charges the electric vehicle; and a battery power supply system which stores power supplied from the hydrogen power supply system and the system power supply system, and supplies the stored power to the electric charger.
B60L 58/40 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la commande d'une combinaison de batteries et de piles à combustible
B60L 53/24 - Procédés de chargement de batteries spécialement adaptées aux véhicules électriquesStations de charge ou équipements de charge embarqués pour ces batteriesÉchange d'éléments d’emmagasinage d'énergie dans les véhicules électriques caractérisés par des convertisseurs situés dans le véhicule utilisant le convertisseur de propulsion du véhicule pour la charge
H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
8.
Sensorless prediction method of overcurrent in isolated bidirectional DC-DC converter
Proposed is a method for accurately predicting an overcurrent flowing inside an isolated bidirectional DC-DC converter even without using a current sensor on primary and secondary sides of a transformer. In the converter according to the present disclosure, an average value of the inductor current is calculated after deriving inflection point current values by respectively modeling a current waveform for an inductor current of the transformer. A secondary side output current average value is calculated by comparing the calculated average value of the inductor current with a secondary side capacitor current average value of the converter at no load. Next, an error between the secondary side output current average value and an actually measured secondary side output current is calculated, and the inflection point current values of the current waveform are updated using a gain for reducing the error through PI control, whereby the overcurrent may be predicted.
H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
A power facility for remote control includes: an analog sensing value reception unit that collects an internal analog sensing value of the power facility; a digital conversion unit that converts the analog sensing value into digital information; and a communication unit that transmits the digital information to an external remote control device by using one optical path. Therefore, by allowing a plurality of analog sensing values from the power facility to be transmitted to the remote control device by using one optical path, transmission efficiency can be increased, and by converting a plurality of analog sensing values of the power facility into digital information and transmitting the digital information with an asynchronous frame, the plurality of analog sensing values can be efficiently transmitted through one optical path without a separate synchronous signal.
H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/00 - Détails d'appareils pour transformation
A power equipment for remote control, in the present invention, comprises: an analog sensing value reception unit for collecting an analog sensing value inside power equipment; a digital conversion unit for converting the analog sensing value to digital information; and a communication unit for transmitting the digital information to an external remote control device by using one optical line. Therefore, the present invention can transmit, to the remote control device, a plurality of analog sensing values in the power equipment by using one optical line, and thus can increase transmission efficiency, and can convert the plurality of analog sensing values in the power equipment to the digital information and transmit same as an asynchronous frame, and thus can efficiently transmit same through one optical line without a separate synchronous signal.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
09 - Appareils et instruments scientifiques et électriques
Produits et services
Surface-coating chemicals for LCD; surface-coating chemicals
for OLED; surface-coating chemicals for PDP; chemical
preparations for use in industry; heat radiation coatings
for LED; organic acid compounds; compositions for the
manufacture of technical ceramics; chemicals for X-ray film
processing; chemical additives for use in manufacture;
catalysts for use in chemical processes. Polaroid film for LED panel; film for LCD panels; optical
films for LCD; prism films for LCD; LED optical film;
conductive film for OLED display; transparent electrode film
for OLED display; optical films for displays; optical film
for polarizer; conductive film for flexible display;
transplant electrode film for flexible display; polymethyl
methacrylate (PMMA) sheet for LCD; microlens films for LCD;
complex films for LCD; LED inspection apparatus; LED desk
lamps display; electronic display panels; inspection
equipment for display panel; electric luminescent display
panels; flat panel display screens; ELD display panel;
organic light emitting diodes (oled); optical inspecting
equipment; reflective plates for liquid crystal displays;
optical sensors; optical filters for plasma display panels;
LED circuit; electric plugs; physical and chemical
laboratory apparatus and instruments; optical apparatus and
instruments, except for glasses and photographic apparatus;
precision measuring apparatus; measuring instruments;
apparatus and instruments for testing material; electrical
controllers; panels for the connection of electricity;
optical fiber connectors; module for LCD.
12.
SENSORLESS PREDICTION METHOD OF OVERCURRENT IN ISOLATED BIDIRECTIONAL DC-DC CONVERTER
Disclosed is a method for accurately predicting an overcurrent flowing inside an isolated bidirectional DC-DC converter, without using current sensors on the primary and secondary sides of a transformer. In the isolated bidirectional DC-DC converter according to the present invention, a current value is derived at an inflection point by modeling the respective current waveforms of inductor currents of the transformer, and the average value of the inductor currents is then calculated. A secondary-side output current average value is calculated by comparing the calculated average value of the inductor currents with a secondary-side capacitor current average value. Next, the error between the secondary-side output current average value and an actually measured secondary-side output current is calculated, and the inflection point current value of the current waveforms is updated using a gain for reducing the error through PI control. The overcurrent of the inductor current is predicted on the basis of the updated inflection point current value.
G01R 31/28 - Test de circuits électroniques, p. ex. à l'aide d'un traceur de signaux
H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/00 - Détails d'appareils pour transformation
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
High purity mixture gas for cleaning semiconductor; high
purity nitrogen compounds for etching semiconductor; high
purity mixture gas for cleaning display; high purity NF3 for
cleaning display; special gas for chemical purposes used for
cleaning semiconductor equipment; mixture gas for use in the
manufacture of semiconductors; gas for processing
semiconductor; ultra high purity gas for use in the
manufacture of semiconductors; Nitron Fluorine Three (NF3);
high purity mixture gas for cleaning solar batteries;
special gas for chemical purposes; fluoride for cleaning
purposes; gas purifying preparations; degassing agents;
carbonic acid gas; chemical preparations for use in
industry; quenching fluids for use in metalworking;
detergents for metal surface (not including detergents for
household purposes); coolants; chemical compositions for
metal plating; inorganic industrial chemicals; oxides;
hydrates; alkalies; compressed air; organic industrial
chemicals; organic acids; argon; nitrogen; nitrogen
compounds; catalysts for use in chemical processes;
antifreeze; bromine for chemical purposes; chemical
sorbents; enzyme stabilizers; salts [chemical preparations];
bases [chemical preparations]; etchants for use in the
manufacture of semiconductors. Gas production services; gas processing services; gas
compression services; purification of gases; petroleum gas
liquefaction; treatment of hazardous gases; processing of
natural gas; refining of natural gas; processing and
assembly of semiconductors; polishing of semiconductor;
recycling of chemicals; natural gas liquefaction services;
processing of metal surface using industrial chemicals;
treatment and coating of metal surfaces; coating of metal
surfaces using physical vapor deposition or chemical vapor
deposition processes; mineral accurate treatment; chemical
treatment of liquids; organic accurate treatment; processing
of compounds; processing of chemicals.
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Gas production services; gas processing services; gas compression services; purification of gases; petroleum gas liquefaction; treatment of hazardous gases; processing of natural gas; refining of natural gas; processing and assembly of semiconductors; polishing of semiconductor; recycling of chemicals; natural gas liquefaction services; processing of metal surface using industrial chemicals; treatment and coating by means of galvanization of metal surfaces; coating of metal surfaces using physical vapor deposition or chemical vapor deposition processes; mineral accurate treatment; chemical treatment of liquids; organic accurate treatment of chemicals; processing in the nature of treatment of chemical compounds; processing in the nature of treatment of chemicals High purity nitrogen gases for cleaning display; Nitron Fluorine Three gases (NF3) for cleaning; Fluorine gas for cleaning purposes; Nitrogen gas
The present invention relates to a responsive gas insulated bus (GIB) support structure. To this end, the present invention comprises: a support; a speed-responsive unlocking part provided at an upper part of the support and having a shape in which a guide is exposed from the both sides thereof; and a bracket which is disposed at a flange of a tank and to which the guide coupled. In the present invention, therefore, when deformation of the structure is large or slow upon the occurrence of a length change due to pressure variation or heat, the speed-responsive unlocking part for supporting the structure is configured to maintain an unlocked state and thus fully absorb the deformation amount to prevent the structure from being deformed and broken.
H02G 5/06 - Installations fermées, p. ex. en coffrets métalliques
F16L 3/18 - Supports pour tuyaux, pour câbles ou pour conduits de protection, p. ex. potences, pattes de fixation, attaches, brides, colliers avec disposition particulière permettant au tuyau de bouger permettant un mouvement selon l'axe
16.
BLUE LED DEVICE FOR DISPLAY, COMPRISING RED ORGANIC-INORGANIC COMPOSITE LIGHT-EMITTING MATERIAL
The present invention relates to a blue LED device for a display, comprising a red organic-inorganic composite light-emitting material allowing high color reproduction and, specifically, to a blue LED device for a display, comprising a red organic-inorganic composite light-emitting material having a composition of chemical formula 1 below. [Chemical formula 1] [(Ax1,Rx2)(L)y(X)]n wherein in chemical formula 1, A includes at least one metal ion or a metal compound thereof, the metal ion being selected from the group consisting of a monovalent metal ion selected from Li, Na, or K, a bivalent metal ion selected from Mg, Ca, Sr, Ba, or Zn, a trivalent metal ion selected from Al or La, or a tetravalent metal ion selected from Zr or Ti; R includes one selected from Eu or an Eu compound; L includes one selected from aromatic compounds having at least two carboxylic acid groups; X includes at least one selected from phenanthroline and a derivative thereof; x1 satisfies 0≤x1<2; x2 satisfies 0
C09K 11/06 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances organiques luminescentes
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p. ex. des polariseurs ou des réflecteurs
17.
LED PACKAGE COMPRISING RED ORGANIC-INORGANIC HYBRID LIGHT-EMITTING MATERIAL AND BACKLIGHT UNIT EMPLOYING SAME
The present invention relates to an LED package comprising a red organic-inorganic hybrid light-emitting material and a backlight unit employing the same and, specifically, to an LED package comprising a red organic-inorganic hybrid light-emitting material having a composition of chemical formula 1 below, and a backlight unit employing the same. [Chemical Formula 1] [(Ax1,Rx2)(L)y(X)]n, wherein A comprises at least one metal ion or a metal compound thereof, the metal ion being selected from the group consisting of a monovalent metal ion selected from Li, Na, or K, a bivalent metal ion selected from Mg, Ca, Sr, Ba, or Zn, a trivalent metal ion selected from Al or La, or a tetravalent metal ion selected from Zr or Ti; R comprises at least one selected from Eu or an Eu compound; L comprises one selected from aromatic compounds having at least two carboxylic acid groups; X comprises at least one selected from phenanthroline and derivatives thereof; x1 satisfies 0≤x1<2; x2 satisfies 0
F21V 8/00 - Utilisation de guides de lumière, p. ex. dispositifs à fibres optiques, dans les dispositifs ou systèmes d'éclairage
G02F 1/1335 - Association structurelle de cellules avec des dispositifs optiques, p. ex. des polariseurs ou des réflecteurs
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
H01L 33/62 - Dispositions pour conduire le courant électrique vers le corps semi-conducteur ou depuis celui-ci, p.ex. grille de connexion, fil de connexion ou billes de soudure
18.
LED LIGHT EMITTING DEVICE COMPRISING RED ORGANIC-INORGANIC COMPOSITE LIGHT EMITTING MATERIAL
The present invention relates to an LED light emitting device comprising a red organic-inorganic composite light emitting material having a composition of the following chemical formula (1): [chemical formula 1] [(A x1,Rx2)(L)y(X)]n, wherein A comprises at least one metal ion or a metal compound thereof selected from the group consisting of a monovalent metal ion selected from Li, Na or K, a bivalent metal ion selected from Mg, Ca, Sr, Ba or Zn, a trivalent metal ion selected from Al or La, or a tetravalent metal ion selected from Zr or Ti; R comprises at least one selected from Eu or an Eu compound; L comprises at least one selected from aromatic compounds having at least two carboxylic acid groups; X comprises at least one selected from phenanthroline and derivatives thereof; 0≤x1<2; 0
C09K 11/06 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances organiques luminescentes
H01L 51/50 - Dispositifs à l'état solide qui utilisent des matériaux organiques comme partie active, ou qui utilisent comme partie active une combinaison de matériaux organiques et d'autres matériaux; Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de tels dispositifs ou de leurs parties constitutives spécialement adaptés pour l'émission de lumière, p.ex. diodes émettrices de lumière organiques (OLED) ou dispositifs émetteurs de lumière à base de polymères (PLED)
H01L 51/56 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de tels dispositifs ou de leurs parties constitutives
19.
RED ORGANIC-INORGANIC COMPOSITE LIGHT EMITTING MATERIAL AND METHOD FOR PRODUCING SAME
The present invention relates to a red organic-inorganic composite light emitting material and a method for producing the same, the red organic-inorganic composite light emitting material having a composition of the following chemical formula 1. [Chemical formula 1] [(A x1,Rx2)(L)y(X)]n, wherein A includes at least one metal ion or a metal compound thereof selected from the group consisting of a monovalent metal ion selected from Li, Na and K, a divalent metal ion selected from Mg, Ca, Sr, Ba and Zn, a trivalent metal ion selected from Al and La, and a tetravalent metal ion selected from Zr and Ti; R includes one selected from Eu and an Eu compound; L includes one selected from aromatic compounds having at least two carboxylic acid groups; X includes at least one selected from phenanthroline and a derivative thereof; and x1 is 0≤x1<2, x2 is 0
The present invention relates to a phosphor plate using a light diffuser and, more specifically, to a phosphor plate into which a light diffuser is added so as to diffuse light within the plate, thereby increasing the efficiency of light to be converted.
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
C09K 11/77 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances inorganiques luminescentes contenant des métaux des terres rares
21.
METHOD FOR MANUFACTURING POLYETHYLENE TEREPHTHALATE FABRIC FOR AIRBAG
The present invention is characterized in that a pentaerythritol tetracaprylate component is contained in an amount of 40 to 60 wt% on the basis of the total weight of a spin finish oil, the content of sulfur contained in an active ingredient of the spin finish oil other than water or mineral oil is less than 0.5 wt%, and a polyethylene terephthalate yarn for airbags is woven with a fabric by oiling using 0.4 to 1.0 wt% of the spin finish oil having a maximum emulsion viscosity of less than 5,000 cP. At this time, if the above-mentioned range is exceeded, a large amount of the spin finish oil remains after refining, resulting in the drawback of coating adhesion degradation. In the case of using the polyethylene terephthalate yarn for an airbag of the present invention, the spin finish oil remaining on scouring paper reduces the degradation of coating adhesion, and thus it is possible to secure more than 1000 times of scrub performance after 21 days of coating, even under the conditions in which the residual amount of the spin finish oil remaining on the scouring paper due to insufficient scouring exceeds 0.2 wt%, and a curing time is short when coated with silicone.
D03D 15/00 - Tissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame
B60R 21/235 - Éléments gonflables caractérisés par leur matériau
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01D 5/098 - Méthodes de filage à partir de masses en fusion avec étirage simultané
D03D 47/00 - Métiers dans lesquels la bobine de trame ne traverse pas la foule, p. ex. métiers sans navette, métiers à pinces, métiers avec fausse navette
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
22.
BACKLIGHT UNIT TO WHICH LED PACKAGE CONTAINING RARE EARTH METAL OXIDE IS APPLIED
The present invention aims to provide an LED package with improved light extraction efficiency, which contains a rare earth metal oxide and a resin for sealing the LED package, and a BLU to which the LED package is applied.
H01L 33/56 - Matériaux, p.ex. résine époxy ou silicone
H01L 33/62 - Dispositions pour conduire le courant électrique vers le corps semi-conducteur ou depuis celui-ci, p.ex. grille de connexion, fil de connexion ou billes de soudure
H01L 33/00 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails
The present invention relates to an infrared LED package comprising rare-earth metal oxide particles and, more specifically, to an infrared LED package which is provided with an infrared LED chip and an LED encapsulant comprising, in a polymer resin, a compound represented by chemical formula 1 and thus has an infrared wavelength of 700-940 nm. [Chemical Formula 1] Ma(OH)b(CO3)cOd, wherein M is Sc, Y, La, Al, Lu, Ga, Zn, V, Zr, Ca, Sr, Ba, Sn, Mn, Bi, or Ac, a is 1 or 2, b is 0-2, c is 0-3, and d is 0-3. b, c and d are not simultaneously 0, and b and c are either simultaneously 0 or simultaneously not 0.
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
The present invention provides a method for preparing a high-viscosity isosorbide polyethylene terephthalate polymer, comprising: a step of preparing a slurry by mixing ethylene glycol (EG), terephthalic acid (TPA) and isosorbide of the following chemical formula 1; an esterification step of the slurry; a melt polymerization step; and a solid state polymerization step, wherein the isosorbide is injected in an amount of 4.0-10 mol%, and more preferably, 4-6 mol% on the basis of TPA. The present invention can prepare a high-viscosity isosorbide polyethylene terephthalate polymer, which can be used in an industrial fiber, by adding isosorbide when preparing the polyethylene terephthalate polymer.
Provided is a method for manufacturing a polyester film by using a simultaneous biaxial stretching method, such that longitudinal and transverse draw ratios are 3.5-4.0 times, the relaxation rate is 5-10%, the temperature range of a stretching zone within a tenter is 80-110°C and the temperature range of a heat treatment zone is 190-240°C. The manufacturing method can provide a biaxially stretching polyester film having uniform transverse physical properties since a bowing phenomenon is inhibited by optimizing the temperature of a stretching zone within a tenter and a heat treatment zone in a simultaneous stretching process, and the draw ratio and relaxation rate of a stretching process.
The present invention relates to a wavy monowire for cutting, which is for the purpose of cutting hard materials, such as hard glass, semiconductors, and hard metals. The present invention is configured to have improved abrasive material retention performance and thus can improve cutting workability and the quality of cut surfaces.
B28D 5/00 - Travail mécanique des pierres fines, pierres précieuses, cristaux, p. ex. des matériaux pour semi-conducteursAppareillages ou dispositifs à cet effet
B23D 61/18 - Outils particuliers pour scier, p. ex. fil coupant comportant des dents de scie, lames de scie ou fil à scier comportant des diamants ou d'autres particules abrasives disposés individuellement dans des positions choisies
B23D 57/00 - Machines à scier ou dispositifs de sciage non couverts par l'un des groupes
C03B 33/10 - Outils à couper le verre, p. ex. outils de rayage
The present invention relates to a wavy monowire for cutting, which is for the purpose of cutting hard materials, such as hard glass, semiconductors, and hard metals, and has an improved abrasion level. The present invention is configured to have an improved abrasion level and improved abrasive material retention performance and thus can improve cutting workability and the quality of cut surfaces.
H01L 21/78 - Fabrication ou traitement de dispositifs consistant en une pluralité de composants à l'état solide ou de circuits intégrés formés dans ou sur un substrat commun avec une division ultérieure du substrat en plusieurs dispositifs individuels
B23D 61/18 - Outils particuliers pour scier, p. ex. fil coupant comportant des dents de scie, lames de scie ou fil à scier comportant des diamants ou d'autres particules abrasives disposés individuellement dans des positions choisies
B28D 5/00 - Travail mécanique des pierres fines, pierres précieuses, cristaux, p. ex. des matériaux pour semi-conducteursAppareillages ou dispositifs à cet effet
H01L 23/00 - Détails de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide
28.
POLYURETHANE-UREA ELASTIC YARN WITH EXCELLENT SELF-FUSION BONDING STRENGTH, AND METHOD FOR PRODUCING SAME
The present invention relates to a polyurethane-urea elastic yarn with excellent self-fusion bonding strength, and a method for producing the same and, more particularly, to a polyurethane-urea elastic yarn with excellent self-fusion bonding strength, and a method for producing the same, characterized in that NCO% is 2.20 to 5.50% upon polymerization of a polyol and a diisocyanate, 100% of ethylene glycol is used as a chain extender, and methanol is used as a chain terminator.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention relates to a method for winding elastic fiber and elastic fiber produced by using the same. More specifically, the present invention relates to a method for winding elastic fiber and elastic fiber produced by using the same, the method being characterized by installing two or more oil supply devices inside a winding device so as to apply different types and amounts of oil for the respective layers of yarn, instead of applying one type of oil in the same amount to the entire yarn.
The present invention relates to a method for preparing spandex having improved unwinding properties and enhanced adhesive properties with a hot melt adhesive and, more specifically, to a method for preparing spandex by means of adding a polystyrene polymer to a polyurethane-urea solution which is a spinning solution. Therefore, when spandex is unwound, irregular ballooning, tension spikes and the like can be effectively improved and other physical properties are unaffected. And the adhesive properties with a hot melt adhesive are enhanced.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention relates to a method for preparing spandex having improved unwinding properties and enhanced adhesive properties with a hot melt adhesive and, more specifically, to a method for preparing spandex by means of adding a polystyrene polymer to a polyurethane-urea solution which is a spinning solution. Therefore, when spandex is unwound, irregular ballooning, tension spikes and the like can be effectively improved and other physical properties are unaffected. And the adhesive properties with a hot melt adhesive are enhanced.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention relates to a polyester fiber treated with an eco-friendly secondary treatment liquid, the polyester fiber containing an epoxidized phenolic resin, a maleic anhydride-polybutadiene copolymer, and vinylpyridine latex and styrene-butadiene latex, to a preparation method therefor, and to a tire cord, whereby a high-functional tire cord that can prevent a delamination phenomenon between rubber and fiber, which occurs at the time of high-speed driving of tire, can be prepared by improving the adhesive force, heat resistance, and fatigue resistance of the tire cord.
D06M 15/41 - Résines phénol-aldéhydiques ou phénol-cétoniques
D06M 15/693 - Traitement des fibres, fils, filés, tissus ou articles fibreux faits de ces matières, avec des composés macromoléculairesUn tel traitement combiné avec un traitement mécanique avec du caoutchouc naturel ou synthétique ou leurs dérivés
D06C 7/00 - Chauffage ou refroidissement de tissus textiles
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
The present invention relates to a polymer solution for manufacturing an acetylated alkyl cellulose separation membrane by using a heat-induced phase separation method, and a method for manufacturing an acetylated alkyl cellulose separation membrane, the polymer solution comprising an acetylated alkyl cellulose polymer and a compound having an ester group. The separation membrane manufactured by the present invention provides the advantage of excellent water permeability and durability.
C08J 3/09 - Production de solutions, dispersions, latex ou gel par d'autres procédés que ceux utilisant les techniques de polymérisation en solution, en émulsion ou en suspension dans des liquides organiques
The present invention relates to an apparatus and method for controlling a circuit breaker for a static synchronous compensator (STATCOM) such that the circuit breaker installed in a branch line for the STATCOM is operated according to the current control characteristics of the STATCOM. An apparatus for controlling a circuit breaker for a STATCOM according to an embodiment of the present invention is an apparatus for controlling a circuit breaker for a STATCOM, installed in a STATCOM-dedicated branch line branched from a main bus of a power system, the apparatus comprising: a transformer protector for detecting the differential current between primary current and secondary current of a transformer connected in series to the circuit breaker in the branch line, and controlling the opening/closing of the circuit breaker; and a STATCOM controller for controlling an operation of the STATCOM, wherein the STATCOM controller outputs, to the transformer protector, an opening suspension signal for suspending the opening of the circuit breaker when overvoltage occurring in the STATCOM is detected, and the transformer protector suspends output of a circuit breaker opening signal to the circuit breaker according to the received opening suspension signal.
H02H 7/04 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour transformateurs
H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
G05F 1/70 - Régulation du facteur de puissanceRégulation du courant réactif ou de la puissance réactive
35.
OPERATION CONTROL DEVICE AND CONTROL METHOD OF SUBMODULE OF MODULAR MULTI-LEVEL CONVERTER
The present invention provides an operation control device and a control method of a submodule of a modular multi-level converter (MMC) for checking the temperature of the submodule during operation of the MMC converter and inputting the submodule into the operation or replacing the same. The operation control device of a submodule of a modular multi-level converter (MMC), according to the present invention, comprises: a plurality of thermal imaging cameras for photographing thermal images of a plurality of submodules participating in operation and a plurality of spare submodules on standby; a temperature extraction unit for extracting the temperature of each submodule from the photographed thermal images; an order determination unit for determining a replacement order to be replaced among the submodules participating in the operation of the MMC converter according to the extracted temperature information of each submodule and a participation order to participate in the operation among the spare submodules; and a control unit for controlling the MMC converter to perform the operation by replacing and inputting the submodules according to the replacement order of the submodules participating in the operation and the participation order of the spare submodules.
The present invention relates to a method for controlling such that, in an MMC for HVDC, each submodule of an unbroken down converter arm operates while lowering output voltage, so as to continuously operate a system, when a submodule of the MMC has broken down in a state in which a redundancy module for improving an operation rate is applied and there are no more redundancy modules to be applied. In the MMC for HVDC, including the plurality of converter arms, wherein each converter arm includes the plurality of operating submodules and preparatory redundancy modules, a redundancy control method of an MMC for HVDC, according to the present invention, comprises the steps of: checking whether a break down has occurred in operating submodules of a first converter arm in a state in which all the redundancy modules of the first converter arm among a plurality of converter arms are applied to the operation; and controlling such that an output voltage of each submodule of other converter arms is lowered so as to make DC link voltages of the other converter arms the same as a DC link voltage of the first converter arm, when a breakdown of the submodules of the first converter arm occurs.
The present invention provides: a modular multilevel converter (MMC) capable of blocking a DC failure and reducing loss by mixedly using a half-bridge sub-module and a full-bridge sub-module in a converter arm of the MMC; and a DC failure blocking method therefor. The MMC according to the present invention comprises a plurality of converter arms, each converter arm comprising: N (N≥2, integer) number of sub-modules connected in series to each other; and a circuit opening unit connected in series to the N number of sub-modules so as to open a circuit of the converter arm, wherein the N number of sub-modules comprise n (n
H02H 7/125 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques pour redresseurs
H02H 7/12 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques
H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
The present invention relates to a transformer having a noise reducing means. The present invention comprises: an iron core (P), which is formed by stacking a plurality of steel sheets, and has stepped parts (S) formed at a portion thereof with different widths; and the noise reducing means provided at the stepped parts (S) so as to increase coupling force among the plurality of steel sheets. The noise reducing means comprises: pressing bars (30) mounted on the stepped parts (S) of the iron core (P), and having plane-shaped horizontal pressing surfaces (31) in the direction in which the steel sheets are stacked; and a binding (90) for surrounding the outer surface of the iron core (P) including the pressing bars (30), so as to press the pressing bars (30) in the stacking direction of the steel sheets. In the present invention, the plane-shaped pressing surfaces are formed on the pressing bars (30) of the noise reducing means in the stacking direction of the iron core (P) such that the iron core (P) is stably pressed over a wide area. Therefore, the pressing force between the steel sheets constituting the iron core (P) is increased and an air gap is reduced such that the vibration of the iron core (P) and the noise caused by the vibration are reduced.
The present invention relates to an NPC conversion device for converting alternating current power to direct current power, the NPC conversion device comprising: a first switch; a second switch; a third switch; a fourth switch, the first to fourth switches being connected in series; and a conversion control unit for performing control such that, during a forward alternating current conversion period, the first switch and the third switch are alternately switched in the opposite directions in order to generate step-by-step potential and the second switch connects the first switch and the third switch, and during a reverse alternating current conversion period, the second switch and the fourth switch are alternately switched in the opposite directions in order to generate step-by-step potential and the third switch connects the second switch and the fourth switch.
H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
H03K 17/567 - Circuits caractérisés par l'utilisation d'au moins deux types de dispositifs à semi-conducteurs, p. ex. BIMOS, dispositifs composites tels que IGBT
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02M 1/00 - Détails d'appareils pour transformation
A heat dissipation apparatus of the present invention comprises: an intermediate structure having first and second flow passage grooves formed on the upper surface thereof so as to be parallel to each other, and third and fourth flow passage grooves formed on the lower surface thereof so as to be parallel to each other, wherein the third and fourth flow passage grooves are parallel to the first and second flow passage grooves; an upper plate brought into close contact with the upper surface of the intermediate structure, wherein the upper plate covers the open side of the first flow passage groove to form a first flow passage and covers the open side of the second flow passage groove to form a second flow passage; a lower plate brought into close contact with the lower surface of the intermediate structure, wherein the lower plate covers the open side of the third flow passage groove to form a third flow passage and covers the open side of the fourth flow passage groove to form a fourth flow passage; and a pumping means that inputs a cooling fluid to the first to fourth flow passages at the same time.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
H01L 23/473 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température impliquant le transfert de chaleur par des fluides en circulation par une circulation de liquides
F28F 13/02 - Dispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution en influençant la couche limite
41.
METHOD AND DEVICE FOR CONTROLLING OPENING/CLOSING OF CIRCUIT BREAKER
A method for controlling the opening/closing of a circuit breaker of the present invention includes: a signal inputting step for receiving an input of a signal; a sign change detecting step for detecting a sign change of the signal; a zero crossing reference setting step for setting a zero crossing reference when there is the sign change; a one period integrated value comparing step for checking whether an absolute value of a one period integrated value obtained by integrating the signal for one period from the zero crossing reference exceeds a reference value; a detected phase comparing step for determining whether a detected phase is identical to a set phase; and a circuit breaker opening/closing step for controlling the opening/closing of a circuit breaker when the absolute value of the one period integrated value does not exceed the reference value and the detected phase is identical to the set phase.
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p. ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
42.
BATTERY MANAGING DEVICE AND BATTERY ENERGY STORING SYSTEM
A battery managing device of the present invention relates to a battery managing device that stores surplus power provided from a system via a power managing device, and controls the charging and discharging of a battery formed of multiple battery modules which supply stored power to the system. The battery managing device comprises: a switch block that connects the multiple battery modules to the power managing device; a charging circuit that charges the battery by means of the power input from the power managing device; a smoothing circuit that discharges or charges the battery according to the real-time power deficit/surplus state of the system; and a control circuit that controls the operation of the switching block, the charging circuit, and the smoothing circuit.
A method for estimating battery life according to one aspect of the present invention comprises the steps of: fully charging a battery according to a predetermined charge condition; partially discharging the fully charged battery according to a predetermined discharge condition; obtaining voltage information (voltage drop) at a plurality of predetermined measurement points while partially discharging the battery; and calculating the remaining capacity of the battery by using the obtained voltage information. The step for calculating the remaining capacity of the battery may comprise the steps of: calculating the capacity of the battery during a one-time full charging and discharging cycle in which measurement is made, from the measured voltage drops; and estimating the remaining battery life by applying the calculated capacity of the battery during a plurality of times of full charging and discharging cycles to a statistical technique.
G01R 31/36 - Dispositions pour le test, la mesure ou la surveillance de l’état électrique d’accumulateurs ou de batteries, p. ex. de la capacité ou de l’état de charge
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
The present invention relates to a core for a transformer or a reactor. The core according to the present invention comprises: a first leg (10), a second leg (12), and a third leg (14), which are made of widthwise rolled steel plates (11); a first yoke (16) for connecting one end of the legs (10, 12, 14) so as for a magnetic flux to pass therethrough; and a second yoke (18) for connecting the other end of the legs (10, 12, 14) so as for a magnetic flux to pass therethrough. The first yoke (16) and the second yoke (18) are made using lengthwise rolled steel plates (17). The first leg (10) has a first coil (10’) wound therearound, and the second leg (12) has a second coil (12’) wound therearound, and the third leg (14) has a third coil (14’) wound therearound. As such, the present invention can relatively increase an overall magnetic reluctance value and thus has the advantage of preventing the occurrence of magnetic saturation.
The present invention provides a dual control apparatus and a control method for a high voltage direct current (HVDC) system, wherein two controllers share error values of integral controllers in the dual control apparatus for a HVDC system, so as to prevent the occurrence of an error between control values of the two controllers. The dual control apparatus for a HVDC system according to the present invention comprises a first controller and a second controller that are operated as a dual controller, the first controller and the second controller each comprising: a deviation calculation unit for calculating a deviation between a target value and a control value; a PI controller for performing proportional control and integral control of the deviation; a first buffer for storing an error value for the integral control by the PI controller of the first or second controller; and a second buffer for storing an error value for the integral control by the PI controller of the second or first controller, wherein the PI controller of the first controller performs the proportional control and the integral control of the deviation using the error value stored in the first buffer of the first controller, and the PI controller of the second controller performs the proportional control and the integral control of the deviation using the error value stored in the second buffer of the second controller.
The present invention relates to a multilevel modular converter (MMC) applied to a static synchronous compensator (STATCOM) and, more particularly, to a redundancy control method of an MMC for a STATCOM, for continuously operating the MMC when an operating submodule breaks down in a state in which there is no more redundancy submodule to be applied, during an operation of the MMC. According to the present invention, a redundancy control method of an MMC, for a STATCOM, linked to the STATCOM and having a plurality of phases, wherein each phase includes a plurality of operating submodules and redundancy submodules, comprises the steps of: checking whether a breakdown has occurred in operating submodules of a first phase when all the redundancy submodules of the first phase, among the plurality of phases, are applied to the operation; and controlling such that an output voltage of each submodule of the first phase is raised so as to make the output voltage of the first phase the same as output voltages of other phases, when a breakdown of the submodules of the first phase occurs.
The present invention is to provide a method for manufacturing a transparent ceramic phosphor plate, which is not only simple, but can also improve product yield. The solution of the present invention comprises the steps of: pulverizing a YAG phosphor to be smaller than or equal to 1 µm by milling; drying the pulverized YAG phosphor in an oven; pressurizing the dried pulverized YAG phosphor to mold the same into a plate; and firing and post-treating the molded plate.
H05B 33/10 - Appareils ou procédés spécialement adaptés à la fabrication des sources lumineuses électroluminescentes
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
The present invention relates to an actuator for a high-speed switch. The frame of the present invention is formed by a frame (110), and the frame (110) consists of multiple mounting plates (112) and columns (114). The mounting plates (112) have parts installed thereon or movably supported thereby. The columns (114) maintain the space between the mounting plates (112). A driving unit (116) is installed so as to pass through a part of the mounting plates (112), and the driving unit (116) is provided with a first driving plate (122) and a second driving plate (124) on a driving shaft (118). A first coil unit (126) is provided on the mounting plate (112) so as to face the first driving plate (122) and generates the movement of the first driving plate (122) at the time of an opening operation. A permanent magnet (128) is installed on one of the mounting plates (112) so as to face the second driving plate (124), and an elastic member (132) is installed on the mounting plate (112) that faces the mounting plate (112) having the permanent magnet (128) installed thereon, so as to provide force for the movement of the second driving plate (124). The permanent magnet (128) also allows the driving unit (116) to perform a making operation and maintain a making state. Further, the permanent magnet (128) and the elastic member (132) are jointly in charge of the force for keeping the driving unit (116) in the making state; thus, if the driving unit (116) deviates from the influential area of the permanent magnet (128) when the opening operation occurs, the opening operation is quickly carried out.
H01H 73/36 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel comportant un déclencheur électromagnétique mais aucun autre déclencheur automatique
The present invention relates to an isolated bidirectional DC-DC converter for enabling highly efficient control by mixedly using different switching schemes according to the type of load in a bidirectional DC-DC converter applied between a DC grid system and a battery. The isolated bidirectional DC-DC converter according to the present invention controls switching of a first switching unit and a second switching unit so as to control the flow of power by changing a bidirectional DC-DC voltage between the DC grid system and the battery, wherein PSM switching control and SPWM switching control are mixedly used according to charge amounts charged to the battery, thereby enabling the efficiency of a system to be improved.
H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
H02M 1/00 - Détails d'appareils pour transformation
The present invention relates to a power supply control method and system capable of efficiently adjusting charging and discharging of an energy storage system (ESS) on the basis of an actual measurement value of a load and an actual measurement value of power generation. The power supply control system of the present invention comprises: a power generation value actual measurement unit for actually measuring a power generation value; a power generation value prediction unit for predicting the power generation value; a load value actual measurement unit for actually measuring a load value; a load value prediction unit for predicting the load value; a correction value calculation unit for correcting at least any one of a peak cut value, a load leveling value, a predictive power generation value, and a predictive load value on the basis of at least any one of a difference value between the power generation value actual measurement unit and the power generation value prediction unit and a difference value between the load value actual measurement unit and the load value prediction unit; and an ESS charging and discharging output control unit for controlling an ESS charging and discharging output by applying the correction value calculated by the correction value calculation unit.
The purpose of the present invention is to optimize the conductor bar shape of a rotor, thereby improving the efficiency of an induction motor. Particularly, the present invention relates to an induction motor rotor structure having rotor conductor bars configured in predetermined double squirrel-cage shapes such that the same is driven with a high output at a lower voltage. The induction motor rotor structure according to the present invention comprises: first conductor bars having double squirrel-cage shapes; and second conductor bars having overall shapes of elongated quadrangular bars, wherein the first conductor bars are arranged on the rotor such that the number of the first conductor bars corresponds to at least three times the number of the second conductor bars.
H02K 17/18 - Moteurs asynchrones à induction avec des rotors à enroulement court-circuité à l'intérieur de la machine, p. ex. des rotors à cage avec des rotors à double cage ou à cages multiples
H02K 1/22 - Parties tournantes du circuit magnétique
52.
GAS INSULATED SWITCHGEAR PARTIAL DISCHARGE DIAGNOSIS METHOD AND DEVICE
The present invention relates to a gas insulated switchgear partial discharge diagnosis method and device for determining the cause of a partial discharge defect of a gas insulated switchgear by analyzing frequency and phase characteristics of a partial discharge signal. The gas insulated switchgear partial discharge diagnosis method according to the present invention comprises: a partial discharge signal detection step of detecting a partial discharge signal; a partial discharge signal analysis step of analyzing a predetermined frequency and/or phase characteristics of the partial discharge signal without phase synchronization with a phase voltage; and a partial discharge defect cause diagnosis step of diagnosing the cause of a defect of a partial discharge on the basis of the frequency and phase characteristics of the partial discharge signal, which has been analyzed in the partial discharge signal analysis step.
A method for diagnosing an oil-immersed transformer, of the present invention, comprises: a dissolved gas measurement step of measuring dissolved gas in the oil-immersed transformer by a dissolved gas measurement part; a dissolved gas analysis step of analyzing the amount of the dissolved gas measured in the dissolved gas measurement step; a stray gassing determination condition confirming step of determining whether stray gassing is included, on the basis of the result of analyzing the amount of the dissolved gas; a first dissolved gas determination step of diagnosing an internal defect of the transformer if the stray gassing is not included; and a second dissolved gas determination step of determining the stray gassing and diagnosing the internal defect of the oil-immersed transformer if the stray gassing is included.
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
G01R 21/12 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des caractéristiques quadratiques d'éléments de circuit, p. ex. des diodes, pour mesurer la puissance absorbée par des charges d'impédance connue dans des circuits comportant des constantes réparties
G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes
The present invention relates to a shorting device for facilitating the grounding of a converter to which a plurality of sub modules are connected in series. The present invention comprises: a moving rod (40) provided on a main frame (10) on which the plurality of sub modules (S) are provided, and moving in the direction traversing the plurality of sub modules (S); and a plurality of contactors (50) provided at the moving rod (40) along the longitudinal direction so as to be electrically connected to each sub module outer casing (1) according to the movement of the moving rod (40). In addition, a connection means (C) electrically connects the contactor (50), the sub module outer casing (1) to which the contactor (50) is electrically connected, and another adjacent sub module outer casing (1) so as to enable simultaneous grounding thereof. The present invention simultaneously connects the respective sub module outer casings (1), which forms the converter, through the operation of the shorting device so as to simultaneously and simply ground the plurality of sub modules (S), thereby improving workplace stability, and enables work speed to become faster by reducing the time required to lower the potential of the sub modules (S).
H01R 11/14 - Pièces d'extrémité se terminant par un œillet, un crochet ou une fourchette le crochet étant adapté pour être accroché sur des lignes aériennes ou autres lignes suspendues, p. ex. pince pour ligne sous tension
H01R 4/48 - Connexions par serrageConnexions par ressort utilisant un ressort, un clip, ou un autre organe élastique
H02G 1/02 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour lignes ou câbles aériens
55.
POLYKETONE SEPARATOR FOR HIGH-TEMPERATURE WATER TREATMENT
The present invention relates to a polymer separator used in an apparatus for treating boiler feed water for the recovery of oil sands and, more specifically, to a polyketone separator that has excellent heat resistance and filtration performance by using polyketone as a separator and thus is applicable to a steam assisted gravity drainage (SAGD) method.
The present invention relates to spandex with improved unwinding properties and without the occurence of scum and a method for producing the same. More specifically, the present invention relates to spandex which is produced by adding polyethylene glycol to a polyurethane urea solution, which is a spinning solution, thereby effectively improving an irregular ballooning phenomenon and a tension spike phenomenon when unwinding spandex, having no adverse effect on other properties such as adhesion properties with hot melt and having unwinding properties without occurrence of scum, and a method for producing the same.
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
A61F 13/15 - Garnitures absorbantes, p. ex. serviettes ou tampons hygiéniques pour application externe ou interne au corpsMoyens pour les maintenir en place ou les fixerApplicateurs de tampons
57.
CAPACITOR DISCHARGE DEVICE INSIDE SUB MODULE OF MMC CONVERTER
The present invention relates to a capacitor discharge device for quickly and safely discharging energy charged in a capacitor inside a sub module of an MMC converter. The capacitor discharge device according to the present invention comprises: a capacitor for storing direct current (DC) voltage inside a sub module of an MMC converter; a power supply device for supplying a necessary operation power source into the sub module by using the voltage stored in the capacitor; a first resistor connected to the capacitor in parallel; a second resistor having a smaller resistance value and a larger thermal capacity than those of the first resistor, and rapidly discharging the voltage stored in the capacitor; a first switching contact for connecting and blocking the capacitor and the second resistor; a switching unit for operating the switching of the first switching contact by an operation power source supplied from a power supply unit; a second switching contact for connecting and blocking the power supply device and the switching unit; and a control unit for operating the switching of the second switching contact.
H02M 7/493 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les convertisseurs statiques étant agencés pour le fonctionnement en parallèle
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
58.
POLYURETHANE-UREA ELASTIC FIBER AND METHOD FOR PREPARING SAME
The present invention relates to a polyurea-urethane elastic fiber and a method for preparing the same, and more particularly, to a polyurethane-urea elastic fiber and a method for preparing the same, wherein polytrimethylene ether glycol is used as a polyol component during polyurethane prepolymerization and 0.5 to 40.0 mol% of polypropylene diamine is mixed and used as an auxiliary chain extender during polyurethane urea preparation. In the present invention, the intrinsic viscosity of the fiber is at least 1.10, and thus rubber-like properties and permanent strain are improved to be excellent, and elasticity and elastic recovery are superb.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
The present invention relates to a polyurethane or polyurethane urea elastic yarn having improved dyeability and to a preparing method therefor. Here, 0.1-20 wt% of at least one kind of material having an alkaline earth metal element with an electronegativity (Pauling scale) of 1.2 or more, a metalloid element with an electronegativity (Pauling scale) of 1.8 or more, or a post-transition metal element with an electronegativity (Pauling scale) of 1.5 or more is added to a polyurethane or polyurethane urea elastic yarn, and thus, not only can the dyeability of the polyurethane or polyurethane urea elastic yarn in a reactive dye be improved through covalent bonding with the reactive dye, but an advantage of increasing the dyeing color depth in a fabric, in which cotton and the polyurethane or polyurethane urea elastic yarn are knitted together, can also be anticipated.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01D 5/00 - Formation des filaments, fils ou similaires
60.
OXYNITRIDE PHOSPHOR, PREPARING METHOD THEREFOR, AND WHITE LIGHT EMITTING ELEMENT
The present invention relates to an oxynitride phosphor, a preparing method therefor, and a white light emitting element, and more specifically, to an oxynitride phosphor characterized by the emission at an emission wavelength of even 500-550 nm using a UV LED and a blue LED as light sources and having a narrow full width at half maximum of 48-80 nm, wherein the oxynitride phosphor has an excellent absorption range of 380-480 nm and facilitates the wavelength shift to even 500-550 nm, to a preparing method therefor, and to a white light emitting element containing the phosphor.
C09K 11/77 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances inorganiques luminescentes contenant des métaux des terres rares
C09K 11/59 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances inorganiques luminescentes contenant du silicium
C09K 11/55 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances inorganiques luminescentes contenant du béryllium, du magnésium, des métaux alcalins ou métaux alcalino-terreux
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
H05B 33/14 - Sources lumineuses avec des éléments radiants ayant essentiellement deux dimensions caractérisées par la composition chimique ou physique ou la disposition du matériau électroluminescent
61.
COLLECTOR OF ELECTROLYZER FOR MANUFACTURING NITROGEN TRIFLUORIDE AND METHOD FOR MANUFACTURING SAME
FOOSUNG PRECISION INDUSTRY CO.LTD. (République de Corée)
HYOSUNG CORPORATION (République de Corée)
Inventeur(s)
Won, Ji Yeon
Kwon, Cheol Hyun
Abrégé
A collector of an electrolyzer for manufacturing NF3 according to the present embodiment comprises: a side portion, which surrounds the periphery of a predetermined number of anode electrodes, and which has the shape of a quadrangular tube; a flange formed to extend vertically with regard to the upper end of the side portion; and a reinforcement ring, which is arranged on the lower-end side of the side portion, which is formed to surround the side portion up to a preset height, and which has the shape of a plate-shaped ring, wherein the side portion has a reinforcement ring coupling portion formed thereon so as to protrude inwards and to be as thick as a size, which corresponds to the thickness of the reinforcement ring, from the lower end thereof to a height that corresponds to the height of the reinforcement ring.
C25B 9/00 - Cellules ou assemblages de cellulesÉléments de structure des cellulesAssemblages d'éléments de structure, p. ex. assemblages d'électrode-diaphragmeCaractéristiques des cellules relatives aux procédés
The present invention provides a DC circuit breaker capable of bidirectionally breaking a fault current that flows in a DC line when a fault occurs in the DC line. This DC circuit breaker comprises: a first mechanical switch having a first DC line connected to one side thereof and a first conductive connecting member connected to the other side thereof; a second mechanical switch having the first conductive connecting member connected to one side thereof and a second DC line connected to the other side thereof; a first diode connected in parallel to the first mechanical switch on a first branching line branched from the first DC line; a second diode connected in series to the first diode through the second conductive connecting member and connected in parallel to the second mechanical switch on a second branching line branched from the second DC line; and a semiconductor switching circuit installed on a line connected between the first conductive connecting member and the second conductive connecting member, and switching the flow of a fault current when a fault occurs.
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H01H 9/30 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p. ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
63.
POLYURETHANE-UREA ELASTIC FIBER WITH EXCELLENT POWER AND EVENNESS AND METHOD FOR MANUFACTURING SAME
The present invention relates to a polyurethane-elastic fiber with excellent power and evenness and a method for manufacturing the same and, more specifically, to a polyurethane-urea elastic fiber with excellent power and evenness and a method for manufacturing the same, wherein when a polyol and diisocyanate are polymerized, the NCO% is 2.60-3.00%, and 100% of ethylene diamine as a chain extender is used, and here, the turbidity of the polyurethane-urea prepolymer is maintained at 1.0 NTU or less immediately after the reaction of a polyurethane-prepolymer, a chain extender, and a chain exterminator.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention relates to a polyurethaneurea elastic yarn with excellent disentanglement and a method for producing the same and, more specifically, to a polyurethaneurea elastic yarn with excellent unwinding property having a peanut-type cross-section and a method for producing the same, wherein NCO% is 2.60 to 3.00% at the polymerization of polyol and diisocyanate; and the average value of cross-section heterogeneity of the elastic yarn is 2.0 to 3.5 and the standard deviation thereof is 0.01 to 1.0 as a result of using 100% of ethylenediamine as a chain extender.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention provides a spandex fiber with improved strength and excellent chlorine resistance, comprising a dialkyl sulfosuccinate corresponding to the following formula (1), where R1 and R2 are independent of each other, are the same or different, and are hydrogen or an alkyl group with 1 to 30 carbon atoms; and M+ represents a cation based on H+, Li+, Na+, K+ or NH4+.
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01D 1/10 - Filtration ou dégazage de la solution ou de la masse de filage
The present invention relates to a power supply apparatus for a sub-module of a Modular Multilevel Converter (MMC) that stably supplies power to a sub-module of the MMC connected to a high-voltage direct current (HVDC) system. The power supply apparatus for a sub-module of an MMC according to the present invention, in a power supply apparatus for providing power to a sub module of an MMC, comprises: a relay unit that is installed between P-N bus bars of the MMC and that includes a Form B contact switch; a resistor that is connected to the relay unit in series; a TVS diode that is connected to the resistor in series; a Zener diode that is connected to the TVS diode in series; a transformer for transmitting the input voltage of the P-N bus bars (primary) to secondary voltage; a semi-conductor switch for switching a flow of current that is supplied to the transformer; a control unit for turning on the semi-conductor switch such that current flows to the transformer if a clamping voltage of the Zener diode is input; a relay operation unit for receiving a secondary output voltage of the transformer, and for operating the Form B contact switch of the relay unit; and a circuit interruption unit that is connected to the relay unit in series and that interrupts a circuit if current flowing through the Form B contact switch of the relay unit is larger than a preset reference current, or if heat is generated due to the current.
H02M 1/084 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques utilisant un circuit de commande commun à plusieurs phases d'un système polyphasé
H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
The present invention relates to a DC breaker that can break a fault current generated in a direct current line, using a unidirectional semiconductor switch device. The DC breaker comprises: a mechanical switch that is connected between a first direct current line and a second direct current line; a first unidirectional semiconductor switch device that is connected with the second direct current line in parallel with the mechanical switch, and transfers a current to the first direct current line into which a steady state current flows through the second direct current line when a fault current is generated, so that a current of the first direct current line becomes zero; an LC resonant circuit that is connected between the first unidirectional semiconductor switch device and an earth in series, is charged by receiving a steady state current of the first direct current line, and generates a resonant current to the first unidirectional semiconductor switch device when the fault current is generated; and a second unidirectional semiconductor switch device that is connected in parallel with each of the first unidirectional semiconductor switch device and the LC resonant circuit, and enables a capacitor of the LC resonant circuit to be charged with a steady state current of the first direct current line.
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p. ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
H01H 33/02 - Interrupteurs pour haute tension ou courant fort comportant des moyens d'extinction ou de prévention des arcs Détails
H01H 33/14 - Contacts principaux multiples destinés à diviser le courant circulant dans l'arc ou la chute de tension le long de l'arc
68.
LARGE CAPACITY BATTERY SYSTEM FOR POWER SYSTEM FREQUENCY REGULATION AND LARGE CAPACITY BATTERY OPERATION METHOD
The present invention relates to a large capacity battery system for managing a large capacity battery used for power system frequency regulation and a large capacity battery operation method. A method for operating a large capacity battery used for power system frequency regulation in a large capacity battery system for managing the large capacity battery according to the present invention comprises the steps of: calculating an estimated frequency regulation signal for the next day using history information of past frequency regulation signals; calculating a bidding capacity and a basic value for the large capacity battery, matched to the estimated frequency regulation signal; determining an operation plan using the calculated bidding capacity and basic value; bidding the bidding capacity and basic value for the large capacity battery according to the operation plan on the day-ahead frequency regulation market; and when the bidding of the bidding capacity and basic value for the large capacity battery has been successful on the day-ahead frequency regulation market, receiving a frequency regulation signal from the real-time frequency regulation market and storing the same, and operating the large capacity battery according to the received frequency regulation signal.
The present invention relates to a capacitor bushing and a manufacturing method therefor. The capacitor bushing of the present invention comprises: insulation layers (20) formed by winding insulation fibers (22) around the outer surface of a central conductor (10); and conductive layers (30) formed by interposing conductive fibers (32) between the insulation layers (20). The wefts (34) and warps (36) that constitute the conductive fibers (32) are made by sequentially forming a first coating layer (38) and a second coating layer (38') on the surface of a core wire (37). The wefts (24) (34) and warps (26) (36) of the insulation fibers (22) and the conductive fibers (32) extend so as to be inclined with respect to the longitudinal direction of the central conductor (10). The wefts (24) (34) and warps (26) (36) form a polygonal or circular shape. Filling layers (40) are formed by placing the central conductor (10) with the insulation layers (20) and the conductive layers (30) on the outer surface thereof in a mold, and an epoxy resin is injected into the mold to form the filling layers (40) while the mold is under vacuum. In the process of curing the filling layers (40), heating is conducted while air pressure is applied to the inside of the mold. As described above, according to the present invention, it is possible to prevent bubbles or pores from being generated in the filling layers (40).
The purpose of the present invention is to provide: polyketone fibers having excellent strength and water resistance, which are manufactured from a polyketone solution prepared from a copolymer of carbon monoxide, ethylene, and propylene; and a manufacturing method therefor. The industrial polyketone fibers manufactured according to the present invention have excellent strength, elongation, water resistance, heat resistance, and thermal conductivity, and thus are suitable for the use in marine ropes, hoses, protective products, Geotextile, fibers for enhancing FRP composite materials, cables, fishing nets, air bags, heat insulators, seat belts, safety nets, roung sling, flying-quality film materials, non-woven fabrics, spun bonds, conveyor belts, flexible containers, fishing lines, sports cords, carbon fiber composite materials, longlines, carpets.
D01F 6/76 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir d'autres produits de polycondensation
B66C 1/12 - Élingues comportant chaînes, fils métalliques, cordes ou bandesFilets
The purpose of the present invention is to provide polyketone fibers having excellent strength and water resistance, which are manufactured from a polyketone solution prepared from a copolymer of carbon monoxide, ethylene, and propylene, and a manufacturing method therefor. The industrial polyketone fibers manufactured according to the present invention have excellent strength, elongation, water resistance, heat resistance, and thermal conductivity, and thus are suitable for the use for marine ropes, hoses, protective products, Geotextile, fibers for enhancing FRP composite materials, cables, fishing nets, air bags, heat insulators, seat belts, safety nets, roung sling, flying film materials, non-woven fabrics, spun bonds, conveyor belts, flexible containers, fishing lines, sports cords, carbon fiber composite materials, longlines, carpets.
D01F 6/76 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir d'autres produits de polycondensation
The present invention relates to a highly thermally conductive composite material and, more specifically, to a highly thermally conductive composite material comprising a base filler, a nanocarbon-based filler, and a polymeric resin.
The present invention relates to a high voltage direct current (DC) circuit breaker in which a vacuum interrupter part and a gas circuit breaker part are connected in series such that the fault current flowing in a high voltage DC line is broken. The DC circuit breaker according to the present invention comprises: the vacuum interrupter part provided at the DC line, and operating when an error occurs at one side or the other side of the DC line, so as to break the current in the DC line; the gas circuit breaker part connected in series to one side of the vacuum interrupter part; an LC circuit connected in parallel to the vacuum interrupter part (110) and including a capacitor and a reactor, which are connected in series, for generating LC resonance; a first bidirectional switching element connected in series to the LC circuit so as to switch a bidirectional current flow; and a second bidirectional switching element connected in parallel to the LC circuit, and switching a current flow so as to form the bidirectional LC resonance.
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p. ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
The present invention relates to a DC circuit breaker that, when failure occurs on a direct current (DC) line, can interrupt, bidirectionally from a mechanical switch, the fault current flowing on the DC line. The DC circuit breaker, according to the present invention, comprises: a first mechanical switch for interrupting a current on a DC line; a first diode connected in parallel to the first mechanical switch; a second mechanical switch connected in series to the first mechanical switch for interrupting the current on the DC line; a second diode connected in parallel to the second mechanical switch; an LC circuit connected in parallel to the first and second mechanical switches and comprising a capacitor and reactor connected in series for generating an LC resonance; a first unidirectional switching element connected in parallel to the LC circuit for switching the current flow so as to generate the LC resonance; and a bidirectional switching element connected in series to the LC circuit for switching the bidirectional current flow.
H02H 3/087 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge pour des systèmes à courant continu
75.
POWER CONTROL APPARATUS FOR SUB-MODULE OF MMC CONVERTER
The present invention relates to a power control apparatus for a sub-module, which controls power supply to a sub-module of an MMC converter connected with an HVDC system and a STATCOM. The power control apparatus of the present invention comprises: a half bridge circuit unit for converting and outputting an input voltage of a P-N busbar of an MMC converter as a low voltage which is relatively low; a transformer for transferring the output voltage (primary side) of the low voltage outputted by the half bridge circuit unit to a secondary side; a DC/DC converter for converting the output voltage at a secondary side of the transformer; a photo coupler for outputting a reference signal corresponding to the size of the output voltage at the secondary side of the transformer; a PWM control unit for controlling switching of the switch within the half bridge circuit unit according to the reference signal of the photo coupler; and a start-up circuit unit for supplying an initial start-up voltage to the PWM control unit, wherein the PWM control unit is initially started by a start-up voltage supplied from the start-up circuit unit, controls switching of the switch according to the reference voltage received from the photo coupler, and is operated by receiving, as an operation voltage, an input of the output voltage outputted to the secondary side of the transformer according to the switching.
H02M 7/19 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p. ex. pour la multiplication de la tension
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
The present invention relates to a power supply apparatus for a sub-module of a Modular Multilevel Converter (MMC) that stably supplies power to a sub-module of the MMC connected to a high-voltage direct current (HVDC) system. The power supply apparatus for a sub-module of an MMC according to the present invention comprises: a charge unit for storing P-N busbar input power of the MMC; a relay unit that is connected to the charge unit in parallel; a resistor that is connected to the relay unit in series; a TVS diode that is connected to the resistor in series; a Zener diode that is connected to the TVS diode in series; a transformer for transmitting the input power (primary) to secondary; a switch for switching a flow of current that is supplied to the transformer; a control unit for receiving a clamping voltage from the Zener diode and turning on the switch such that current flows to the transformer; and a relay operation unit for operating the relay unit when a secondary output voltage of the transformer is input.
H02M 7/19 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p. ex. pour la multiplication de la tension
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
The present invention provides a method for operating a dual controller, which determines whether an error occurs in the dual controller by monitoring the state of the dual controller and enables the dual controller to be normally operated. The method for operating the dual controller according to the present invention calculates variations of dq conversion values by performing the dq conversion of control command output values of first and second controllers, and calculates average variations of the dq conversion values by performing the dq conversion of feedback input values of the first and second controllers. When the average variations of the dq conversion values for the control command output values are respectively the same as the average variations of the dq conversion values for the feedback input values, it is determined that the corresponding controller is in a normal state, with respect to the first and second controllers, and when the average variations of the dq conversion values for the control command output values are respectively different from the average variations of the dq conversion values for the feedback input values, it is determined that the corresponding controller is in an erroneous state with respect to the first and second controllers. According to the determined results, the controller in an erroneous state is set to a standby state and the controller of a normal state is set to an active state.
An electrode device for a gas insulated switchgear is disclosed. An electrode device for a gas insulated switchgear according to an embodiment of the present invention comprises: a first coating layer having a first permittivity, which is coated so as to reduce an electric field with respect to the outer surface layer of a conductor placed in a case; and a second coating layer having a second permittivity relatively lower than the first permittivity, which is formed outside the first coating layer.
The present invention relates to a power control apparatus for a sub-module of a modular multi-level converter (MMC) which is configured to control stable power supply to the sub-module of an MMC, which is associated with a high-voltage DC transmission (HVDC) system and a static synchronous compensator (STATCOM). The power supply control apparatus according to the present invention comprises: at least one first resistor connected between the P-N generating lines of the MMC converter; a second resistor connected in series with the first resistor; a switch connected in series with the second resistor; a third resistor connected in parallel with a series connection of the second resistor and the switch; a Zener diode connected in parallel with the third resistor; and a DC/DC converter, connected to the output terminals of both ends of the Zener diode, which converts voltage at both ends of the Zener diode and transfers the voltage to the sub-module, wherein the magnitude of current flowing through the Zener diode varies in accordance with on/off switching of the switch.
H02M 7/19 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p. ex. pour la multiplication de la tension
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
The present invention relates to a rotor formed by stacking a plurality of rotor cores, each having a shaft hole, and to a rotor of a synchronous reluctance electric motor, wherein each rotor core has a plurality of flux barrier groups formed along the circumferential direction of a rotary shaft, each flux barrier group has a plurality of flux barriers formed in the radial direction of the rotary shaft, and the widths of the flux barriers adjacent to the shaft hole are formed to be different from the widths of the flux barriers, which are not adjacent to the shaft hole, among the plurality of flux barriers formed in one flux barrier group, thereby increasing the efficiency of the electric motor, and reducing stress and torque ripple, which are applied to the rotor when the rotor is press-fitted onto the rotary shaft by shrink-fitting.
The present invention relates to a transformer tank having a noise reduction structure. The tank (10) of the present invention constitutes the exterior of a transformer and has a transformer main body installed therein. The outer surface of the tank (10) is formed by a flat wall (14) that is perpendicular to the ground, a first inclined wall (16) that is inclined with respect to the ground in one direction, and a second inclined wall (18) that is inclined with respect to the first inclined wall (16) in the opposite direction, and at least the first inclined wall (16) and the second inclined wall (18) form a flexure section (13). The flexure section (13) strengthens the rigidity of the tank (10) and minimizes the radiation of noise by forming flexure on the outer surface of the tank (10). A plurality of reinforcing columns (20, 20') are mounted on the outer surface of the tank (10), each of which includes a rectilinear section (22), a first inclined section (24), and a second inclined section (26) to correspond to the shape of the flexure section (13). According to the present invention, the rigidity of the transformer tank is strengthened, and the radiation of noise is minimized. In addition, the direction of the noise radiated from the flexure section (13) is adjusted, and noise in a region adjacent to the flexure section (13) is minimized.
The present invention relates to a transformer having a noise reduction structure. A tank (12) forms the exterior of the transformer (10). An inner space (14) filled with insulating oil is formed inside the tank (12). An iron core (20) is provided inside the tank (12) by a lower frame (16) and an upper frame (18), and windings (22) are wound around parts of the iron core (20) extending in the direction of gravity. An insulating sheet (24) is provided to encompass the surface of the winding (22), and has ridge portions (26) and groove portions (28), which are formed to extend in the height direction of the iron core (20). It is preferable that the inner surfaces of the groove portions (28) are formed in parallel so as to face each other. The present invention as above minimizes the transfer of vibrations, generated from the windings (22), to the insulating sheets (24) provided on the surfaces of the windings (22) and removes a part of the vibrations since the vibrations coming out after having passed through the insulating sheets (24) are transferred to the insulating oil so as to cancel each other out. Therefore, the present invention can relatively reduce vibration and noise, which are generated from the transformer.
The present invention relates to a DC circuit breaker that, when failure occurs on a direct current (DC) line, can interrupt, bidirectionally from a mechanical switch, the fault current flowing on the DC line. The DC circuit breaker, according to the present invention, comprises: a mechanical switch installed on a DC line and opened when failure occurs on one side or the other side of the DC line so as to interrupt a current on the DC line; a first bidirectional switching element connected in parallel to the mechanical switch for switching the bidirectional current flow; an LC circuit connected in parallel to the mechanical switch and comprising a capacitor and reactor connected to each other in series for generating an LC resonance; a first unidirectional switching element connected in parallel to the LC circuit for switching the current flow so as to generate the LC resonance; and a second bidirectional switching element connected in series to the LC circuit for switching the bidirectional current flow.
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p. ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
The present invention provides a modular multilevel converter (MMC) additionally including M number of redundant submodules besides N number of submodules necessary for an operation, so as to control N+M number of submodules such that the N+M number of submodules participate in switching while rotating. The MMC according to one embodiment of the present invention comprises: a plurality of submodules connected in series to each other; and a control unit for controlling the ON/OFF switching of the submodules, wherein the plurality of submodules comprise the N number of submodules participating in the operation of the converter and the M number of redundant submodules for participating in the operation instead of the erroneous submodule when an error occurs in at least one of the N number of submodules, and the control unit switches the submodules ON when each carrier signal allocated to the N+M number of number of submodules is greater than a predetermined reference signal, and switches the submodules OFF when each carrier signal allocated to the N+M number of submodules is less than the predetermined reference signal.
H02M 7/19 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p. ex. pour la multiplication de la tension
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
85.
POWER SUPPLY DEVICE FOR SUB-MODULE CONTROLLER OF MMC CONVERTER
The present invention relates to a power supply device for a sub-module controller of a modular multilevel converter (MMC) which supplies operating power to a sub-module controller of an MMC connected to a high voltage direct current (HVDC) transmission system. The power supply device according to the present invention comprises: N (N≥2, integer) energy storage units for storing DC voltage in sub-modules of an MMC converter, which are connected in series to each other; a bridge circuit unit including a plurality of power semiconductors which are connected in parallel to the N energy storage units in the form of a bridge; and a DC/DC converter for converting voltage output from output terminals formed at both ends of n (1≤n
H02M 7/19 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p. ex. pour la multiplication de la tension
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
The present invention relates to a redundant control system. The redundant control system comprise: a clock generation unit for generating a clock at predetermined periods; a first buffer for storing control data output from a first control unit; a second buffer for storing control data output from a second control unit; first and second state monitors for checking whether there are the control data of the first and second controllers, stored in the first and second buffers respectively, during the period of the same clock among clocks supplied by the clock generation unit; a switching unit which is switched to transmit, to a lower-level module, any one of the control data of the first and second controllers, stored in the first and second buffers; and a control unit for determining whether a failure occurs in the first and second controllers, from the result of checking the existence of the first and second control data, output from the first and second state monitors, and controlling the switching unit as a result of the determination.
The present invention relates to a cover for a motor housing, in a motor comprising: a motor housing having a cooling fin installed on the outer circumferential surface thereof; a cover installed in one side of the motor housing; a rotation shaft installed so as to penetrate through the motor housing and the cover; a bearing installed between the rotation shaft and the cover; and a fan hood having a cooling fan therein and installed in the other side of the motor housing, the cover for a motor housing comprising: a first main body unit having a first hollow hole formed in the central portion thereof; a second main body unit installed in the inner side surface of the first main body unit; and a plurality of cooling flow paths, formed between the first main body unit and the second main body unit, for cooling the bearing by means of air discharged by the cooling fan.
H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
H02K 9/06 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine comportant des moyens pour établir la circulation d'un agent de refroidissement avec des ventilateurs ou des dispositifs d'entraînement mûs par l'arbre de la machine
The present invention relates to: a vacuum interrupter for bidirectionally moving two movable electrodes so as to implement a short circuit and a short-circuit release; and a driving method therefor. The vacuum interrupter according to the present invention comprises: a housing in which there is a vacuum state; and first and second movable electrodes partially accommodated within the housing and including first and second movable contacts attached to each end thereof, wherein the first and second movable electrodes can move in both directions, and the first and second movable contacts come into contact with each other and are separated from each other by the bidirectional movement of the first and second electrodes.
Disclosed is a fast switch device including: a reactor that moves to an open position where the switch is opened and a close position where the switch is closed; an open coil portion that drives the reactor to the open position by virtue of an eddy current component; a close coil portion that drives the reactor the close position by virtue of an eddy current component; and a controller that performs control such that an electric current is applied to the close coil portion oppositely to a direction of an electric current flowing through the open coil portion in order to brake the reactor during an open operation for driving the reactor to the open position, and an electric current is applied to the open coil portion oppositely to a direction of an electric current flowing through the close coil portion.
The present invention relates to a spring operation device for a breaker. The present invention comprises: a main rotation shaft (60) that is in operation and connected to a main driving part (30), and that has a breaker (100) connected to one side thereof; a close spring apparatus (75) having a close spring (75) that is connected to the main driving part (30) and that performs a closing operation; and open spring apparatuses (87 and 89) that are connected to the main rotation shaft (60) and perform an opening operation, wherein a first spring (87) and a second spring (89) having different lengths from one to another are arranged in parallel. In addition, the first spring (87) and the second spring (89) are concentrically installed in the open spring apparatuses (87 and 89). In the present invention, the first spring (87) and the second spring (89) having different lengths to one another are connected in parallel so as to form an open spring (87 and 89), and therefore, in the initial stage of the opening operation when a large amount of energy is required, the first spring (87) and the second spring (89) operate together and the opening operation is performed at a fast speed, and after that, only the first spring (87) is operated, and thereby unnecessary shock or driving power is not applied to other parts of the spring operation device.
The present invention relates to an insulating spacer for a gas insulated switchgear and a manufacturing method thereof. The insulating spacer, according to the present invention, comprises: a case (10) having a sealed space formed therein, wherein the sealed space is filled with an insulating gas; a central conductor (300) within the sealed space of the case (10), wherein the central conductor (300) extends along the longitudinal direction of the case (10); an epoxy-molded part (120) that supports the central conductor (300) within the sealed space; and an insulating layer (200) provided between the epoxy-molded part (120) and the central conductor (300). Herein, the outer surface of the central conductor (300) and the outer surface of the epoxy-molded part (120), which make contact with the insulating layer (200), are formed to be a flat surface, and the insulating layer (200) is attached to the outer surface of the central conductor (300) through coating. As described above, the insulating layer, which is a high-performance epoxy coating layer, is provided between the central conductor (300) and the insulating spacer, which constitute the gas insulated switchgear, in order to enhance the bonding force between the bonding surfaces. Accordingly, in the present invention, it is not necessary to perform sand blasting on the conductor surface in order to enhance the bonding force, or to design the outer surface of the central conductor (300) in a round shape in order to increase the bonding area.
The present invention relates to an electromagnetic repulsion actuator for a circuit breaker. The present invention comprises: a housing (10); a first fixed electrode (20) formed inside the housing (10) and having therein an operating space (21) opened to both sides; a pair of moving electrodes (50) installed on both sides of the operating space (21) of the first fixed electrode (20) to enable reciprocating motion, and conducted with the first fixed electrode (20); second fixed electrodes (60) spaced apart from the first fixed electrode (20) and installed on each of both ends inside the housing (10), and by being selectively in contact with the pair of moving electrodes (50) and being conducted with the pair of moving electrodes (50), thereby transmitting power supplied from one side to the other side. The operating coils (30, 40) generate magnetic force by means of an induced current and move the moving electrode (50) in the direction of being separated from the second fixed electrode (60). The present invention as above moves the moving electrode (50) by using an induced current generated by the close coil (30) and the open coil (40) to perform an open operation, and accordingly, the structure of a circuit breaker can be simple and the moving speed of the moving electrode (50) is increased.
The present invention relates to a method for diagnosing the state of a capacitor in a modular converter. The method for diagnosing the state of a capacitor according to the present invention comprises: a table determination step for determining an FIT table according to input voltages and temperatures of an internal capacitor with respect to a plurality of sample modular converters; an input voltage detection step for detecting, by an input voltage detection unit, an input voltage of a capacitor at predetermined periods in a modular converter to be measured, for which the state of a capacitor is diagnosed; a temperature detection step for detecting, by a temperature detection unit, a temperature of the capacitor of the modular converter to be measured, at the predetermined periods; a cumulative average value calculation step for calculating cumulative average values of the input voltages and the temperatures of the capacitor, detected by the input voltage detection unit and the temperature detection unit respectively during the periods; a selection step for selecting, by a control unit, an FIT value corresponding to the calculated cumulative average values for the input voltage and the temperature in the FIT table; and an extraction step for extracting a mean time between failures (MTBF) of the capacitor from the FIT value.
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
The present invention relates to a dual controller system, which analyzes control signals received from two dual controllers operating in an active state, so as to check whether the controllers are abnormal, and operates the controllers in a normal state. The dual controller system according to the present invention comprises: a plurality of sub-modules for performing respective preset functions; and first and second controllers for respectively controlling the plurality of sub-modules, wherein the first and second controllers transmit control signals to the sub-modules, and the sub-modules determine whether an error has occurred in the received two control signals so as to delete the control signal in which an error has occurred and perform a function according to a normal control signal.
The present invention relates to a method for increasing the pH of a spandex fabric by using an inorganic additive, wherein approximately 0.5-10.0 wt% of the inorganic additive such as calcium oxide (CaO) is added to a spandex polymer on the basis of the amount of the solid part of the corresponding polymer.
The present invention relates to spandex having an improved dyeing property and, more specifically, to spandex having an improved dyeing property with respect to a reactive dye by simultaneously applying a hydrophilic polymer having a hydrophilic group to enable the reactive dye to easily access spandex fiber; and a reactive group additive having a reactive group capable of being coupled with the reactive dye.
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D06P 1/38 - Procédés généraux de teinture ou d'impression des textiles ou procédés généraux de teinture du cuir, des fourrures ou des substances macromoléculaires solides de toutes formes, classés selon les teintures, les pigments ou les substances auxiliaires utilisés utilisant des colorants réactifs
97.
SOC MANAGEMENT SYSTEM OF ENERGY STORAGE DEVICE, AND METHOD THEREFOR
The present invention relates to a state of charge (SOC) management system of an energy storage device, the system comprising at least one energy storage device, wherein the SOC management system of the energy storage device manages SOC of the energy storage device by performing P-f (active power-frequency) droop control on the basis of a droop coefficient, a reference frequency, and a dead band, which determine the output of each energy storage device.
The present invention relates to a method for preparing spandex with an improved unwinding property and, more specifically, to a method for preparing spandex by injecting polyethylene glycol into a polyurethane urea solution, which is a spinning solution, thereby effectively improving an irregular ballooning phenomenon, a tension spike phenomenon and the like when unwinding spandex, and improving an unwinding property without an adverse effect on other physical properties such as adhesive characteristics of spandex with a hot melt.
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/70 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyuréthanes
D01D 5/00 - Formation des filaments, fils ou similaires
99.
HEAT-STORING AND WARMTH-RETAINING FLEECE AND METHOD FOR MANUFACTURING SAME
The present invention relates to a heat-storing and warmth-retaining fleece using a polyester yarn containing composite metal oxide fine particles, and the heat-storing and warmth-retaining fleece of the present invention provides excellent far-infrared radiation, heat-storing and warmth-retaining properties, spinning operability, and dyeability.
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
The present invention relates to a radiator for a transformer. The radiator of the present invention comprises: an upper header pipe (10) connected to the upper portion of an enclosure of the transformer body; a plurality of radiating plates (20) connected to the upper header pipe (10) in sequence to receive an insulating oil; a lower header pipe (10') that returns the insulating oil, which has released heat to external air while flowing within the radiating plates (20), into the enclosure; and bridge pins (30) installed in air passages (22) formed between the radiating plates (20) to exchange heat with external air while making contact with the external air. The bridge pins (30) are formed of a material having a high heat transfer rate and include first and second attachment parts (31, 32) installed to make contact with the outer surfaces of the radiating plates (20) and a connecting part (33) that interconnects the first and second attachment parts (31, 32). The connecting part (33) has a through-hole (35) formed therein to allow air to pass through the through-hole. According to the present invention, it is possible to reduce a difference in temperature between the radiating plates (30), thereby enhancing the heat exchange efficiency.
