Devices, methods, and systems for detecting a fault in an electrical power system which includes a source-side converter in communication with a load-side converter via a transmission line. An output current from the source-side converter to the load-side converter over the transmission line is measured during a time period from a beginning of a first current pulse of the output current to a beginning of a second current pulse of the output current. An output voltage of the source-side converter is reduced, responsive to a profile of the output current differing from an expected profile of the output current during the time period. In some implementations, the expected profile of the output current includes a current limit, and the output current differs from the expected profile by exceeding the current limit during the first current pulse.
In a line to line fault detection and protection system, a source end power supply supplies power to a remote load over a transmission line and monitors the dynamic behavior of a transmission line power characteristic. If that dynamic behavior is outside a constraint that is actively imposed on the transmission line dynamic behavior by a load end power conditioning system, a possible line to line fault is recognized. The preferred power characteristic is current and the preferred constraint is a maximum rate of change of current drawn from the transmission line by the load end power conditioning system.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 31/28 - Test de circuits électroniques, p. ex. à l'aide d'un traceur de signaux
G01R 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre
H02H 3/44 - 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 aux taux de variation de quantités électriques
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 1/00 - Détails d'appareils pour transformation
In a line to line fault detection and protection system, a source end power supply supplies power to a remote load over a transmission line and monitors the dynamic behavior of a transmission line power characteristic. If that dynamic behavior is outside a constraint that is actively imposed on the transmission line dynamic behavior by a load end power conditioning system, a possible line to line fault is recognized. The preferred power characteristic is current and the preferred constraint is a maximum rate of change of current drawn from the transmission line by the load end power conditioning system.
H02H 3/44 - 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 aux taux de variation de quantités électriques
G05F 1/575 - Régulation de la tension ou de l'intensité là où la variable effectivement régulée par le dispositif de réglage final est du type continu utilisant des dispositifs à semi-conducteurs en série avec la charge comme dispositifs de réglage final caractérisé par le circuit de rétroaction
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
A power transfer switch suitable as a bypass switch connecting a utility feed to a load comprises a bi-stable actuator selectively driven by a compression means charged by a handle. A latch retains the actuator until suitable power source conditions are detected to allow the transfer to proceed. The controller releases the latch and the actuator abuts breakers in sequence to effect a reliable make-before-break or break-before-make transfer.
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
H01H 3/58 - Mécanismes pour le couplage ou découplage de la pièce actionnante, du mécanisme moteur ou des contacts utilisant un embrayage à friction, à dents ou un autre embrayage mécanique
H01H 9/20 - Mécanismes d'interverrouillage, verrouillage ou accrochage
5.
Synchronous rectification of LLC converters based on homopolarity
Synchronous rectification methods and algorithms, and polarity sensing techniques, based on the homopolarity cycle concept for conduction loss reduction in LLC resonant converters are provided. In a half bridge rectifier configuration, one of rectifier switches is switched ON when the polarity of the inverter and rectifier voltages are both positive and the other rectifier switch is switched ON when both polarities are negative.
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
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 technology described herein is generally directed towards a gateway device (e.g., a cable modem or telecommunications modem) that is coupled to a base component. The base component couples to an interchangeable lid that is coupled to an electronic device. This forms a sealed housing for outdoor use, e.g., between a provider head end and the subscriber(s). A universal interface provides power or a network connection, or both, to the electronic device. The base component and/or the sealed housing protect the internal components against environmental effects. The base component and/or the sealed housing protect against external RF signals from entering, and internally generated RF signals from exiting.
H02G 5/06 - Installations fermées, p. ex. en coffrets métalliques
H04B 1/03 - Détails de structure, p. ex. boîtiers, enveloppes
H04B 1/08 - Détails de structure, p. ex. ébénisterie
H04B 1/38 - Émetteurs-récepteurs, c.-à-d. dispositifs dans lesquels l'émetteur et le récepteur forment un ensemble structural et dans lesquels au moins une partie est utilisée pour des fonctions d'émission et de réception
H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques Détails
A power supply system comprises a primary regulation system, a secondary regulation system, and a controller. The primary regulation system comprises a primary transformer and a primary tap switch array. The secondary regulation system comprising a secondary transformer and an adjustment power signal generator. The controller is configured to control the adjustment power signal generator to apply an adjustment power signal to the secondary transformer. The secondary transformer is configured to combine the adjustment power signal with a base power supply signal from the primary transformer.
G05F 1/10 - Régulation de la tension ou de l'intensité
H02M 5/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des transformateurs
H02M 7/162 - 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 dans une configuration en pont
A battery block comprises first and second batteries each defining at least one vent port, a first terminal assembly connected to a positive terminal of the first battery, a second terminal assembly connected to a positive terminal of the second battery, at least one connector assembly connected to a negative terminal of the first battery and to a positive terminal of the second battery, and a matrix of rigid material. The matrix of rigid material surrounds at least a portion of the first and second batteries to secure the first and second batteries together, covers the at least one connector assembly to inhibit removal of the at least one connector assembly from the negative terminal of the first battery and the positive terminal of the second battery, and defines a void over at least a portion of the at least one vent port in the first and second batteries.
A power supply configured to be operatively connected to at least one load, comprising an AC bus operatively connected to the load, a first AC power source operatively connected to the AC bus, a DC bus, a DC/AC converter operatively connected between the DC bus and the AC bus, a first DC power source, and a load balancer operatively connected between the first DC power source and the DC bus. The power supply operates in a first mode in which power is supplied to the load from the first AC power source through the AC bus and in a second mode in which power is supplied to the load from the first DC power source through the DC bus, the DC/AC converter, and the AC bus.
H02M 9/06 - Transformation d'une puissance d'entrée en courant continu ou courant alternatif en une puissance de sortie de choc avec une puissance d'entrée en courant alternatif
10.
SWITCHING SYSTEMS AND METHODS FOR USE IN UNINTERRUPTIBLE POWER SUPPLIES
The present invention may be embodied as an uninterruptible power supply comprising an input section, an output section, an inverter section, and a transformer. The transformer is operatively connected to the input section, the output section, and the inverter section. The uninterruptible power supply operates in a line mode and in a standby mode. In the standby mode, the output section generates an output power signal from a standby signal generated by the inverter section based on the alternative power source and at least one inverter control signal. When the uninterruptible power supply operates in the standby mode, the at least one inverter control signal is pulse- width modulated during at least a first portion of a cycle of the output power signal and not pulse-width modulated during at least a second portion of the cycle of the output power signal.
H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
A battery system having at least one battery string of more than two batteries connected in series, a charge equalization circuit, a relay matrix, and a balance controller. The charge equalization circuit is capable of equalizing the charge on any pair of series connected batteries in the at least one battery string. The relay matrix is operatively connected between the charge equalization circuit and the at least one battery string. The balance controller controls the relay matrix such that at least one battery characteristic of at least one battery is sensed. Based on at least one sensed battery characteristic, the balance controller controls the relay matrix such that the charge equalization circuit is connected across at least one pair of series connected batteries in the at least one battery string.
A UPS module configured to be arranged between at least one AC line and a communications system comprising at least one load comprises a power system, a diagnostic system, and a communications module. The power system comprising a battery module, an inverter module, and a transformer module and is operatively connected between the AC line and the at least one load. The diagnostic system generates battery diagnostic information, inverter diagnostic, utility diagnostic information, and transformer diagnostic information. The communications module transfers diagnostic information between the diagnostic system and the communications system.
An uninterruptible power supply for supply electrical power to a load, comprises a connection to a primary source for supplying primary power, a battery system for storing battery power, an inverter, and a controller. The controller controls the inverter to operate in a first mode, a second mode, and in a third mode. In the first mode, power is supplied to the primary load and the battery system based on primary power. In the second mode, power is supplied to the primary load based on battery power. In the third mode, power is supplied to the primary source based on battery power.
H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
14.
FERRORESONANT TRANSFORMER FOR USE IN UNINTERRUPTIBLE POWER SUPPLIES
A ferroresonant transformer comprises a core, a main shunt, first windings, second windings, and third windings. The main shunt arranged relative to the core to define a primary side and a secondary side of the ferroresonant transformer. The first windings are arranged on the primary side of the ferroresonant transformer and are operatively connected to the primary power source. The second windings are arranged on the secondary side of the ferroresonant transformer and are operatively connected to the secondary power source. The third windings are arranged on the secondary side of the ferroresonant transformer and are operatively connected to the resonant capacitor. When a primary signal is present on the first windings, a first output signal is present on at least a portion of the third windings. When a secondary power is present on the second windings, a second output signal is present on at least a portion of the third windings.
H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
15.
VIDEO ALIGNMENT AND CALIBRATION FOR VIDEO QUALITY MEASUREMENT
Video alignment and calibration, which is needed for video quality measurement in full-reference mode, is performed continuously on the videos being measured to account for alignment parameters that may change over time. With this technique, the quality of video files and/or live video streams can be measured in full-reference mode in real-time. During video alignment, the temporal and spatial offsets, as well as any spatial, luminance or color transformations between the two videos are measured; during video calibration, the video frames are adjusted for these offsets and transformations so that the video quality can be measured correctly.
A solar power system for supplying electrical energy to a load based on solar energy comprising at least one solar panel, a power supply, and at least one mode select switch. The at least one solar panel comprises at least one solar cell. The at least one mode select switch is operatively connected to the at least one solar panel, the power supply, and the load. The at least one mode select switch is operable in a first mode and in a second mode. In the first mode, the at least one solar cell is capable of supplying electrical energy to the load. In the second mode, the power supply supplies electrical energy to the at least one solar cell such that the at least one solar cell generates heat.
H02J 7/35 - Fonctionnement en parallèle, dans des réseaux, de batteries avec d'autres sources à courant continu, p. ex. batterie tampon avec des cellules sensibles à la lumière
H01L 31/042 - Modules PV ou matrices de cellules PV individuelles
H01L 31/058 - comprenant des moyens pour utiliser l'énergie thermique, p.ex. systèmes hybrides, ou une source additionnelle d'énergie électrique
17.
SIMPLIFIED MAXIMUM POWER POINT CONTROL UTILIZING THE PV ARRAY VOLTAGE AT THE MAXIMUM POWER POINT
A converter system adapted to be connected between a photovoltaic power source and a load comprises a converter circuit, a control circuit, and a PWM generator circuit. The converter circuit is operatively connected to transfer energy from the photovoltaic power source to the load. The control circuit generates a raw control signal based on at least a voltage generated by the photovoltaic power source. The PWM generator circuit is operatively connected to the converter circuit and generates a PWM switch signal based on the raw control signal. The converter circuit transfers energy from the photovoltaic power source to the load based on the PWM switch signal.
H02J 7/35 - Fonctionnement en parallèle, dans des réseaux, de batteries avec d'autres sources à courant continu, p. ex. batterie tampon avec des cellules sensibles à la lumière
H02M 7/48 - 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
09 - Appareils et instruments scientifiques et électriques
Produits et services
Electric distribution, conversion and protection devices for telecommunications equipment, namely, fuse panels and bays, circuit breakers, surge protectors, equipment power supplies, power rectifiers, power converters and battery monitor and control equipment
09 - Appareils et instruments scientifiques et électriques
Produits et services
Electric distribution, conversion and protection devices for telecommunications equipment, namely, fuse panels and bays, circuit breakers, voltage surge protectors, electrical power supplies, power rectifiers, power converters and battery monitors and controllers
09 - Appareils et instruments scientifiques et électriques
Produits et services
(1) DC power systems, namely DC power supplies; rectifiers, converters, uninterruptible power supplies, fuse panels, supervisory panels, termination panels, breaker panels.
