The main assembly of a leakage transformer includes a bobbin which includes collar/collars adjacent to location/locations corresponding to a winding edge of a primary coil and/or a secondary coil wound around the bobbin. The collar includes a first collar separating the primary coil and the secondary coil from each other in an axial direction. The leakage transformer includes a bottomed casing within which the main assembly is received and embedded in a filling material. At least one of the collar/collars have a coil facing surface that is formed with a pattern of concavity and convexity. The pattern includes a plurality of protrusions and recesses extending substantially parallel to each other in a longitudinal direction. The recesses of the collar extend in the longitudinal direction and represent channels resembling grooves through which the filling material is passed and guided into the coils present in their vicinity.
A power conversion device comprises: a voltage conversion circuit having a switching element; a control circuit performing switching control of the voltage conversion circuit; and a current detection circuit detecting current output from the voltage conversion circuit, and the control circuit calculates an average value of current output from the voltage conversion circuit based on a first current value detected in a first switching state where output of current increases, a second current value detected in a second switching state where output of current decreases and a modulation ratio related to switching control of voltage conversion, and controls operation of the voltage conversion circuit based on a calculated average value.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
In a renewable energy-use power system provided with a battery, a DC-DC converter converts the output of a power generation unit that generates electric power using renewable energy into DC power of a predetermined voltage, and outputs the converted power to a DC bus. A power conversion unit converts the DC power of the DC bus into DC power or AC power and outputs the converted power outside the system. A switch is connected between the DC bus and a battery and configured to be switchable between the ON state and the OFF state. The DC-DC converter changes the voltage value of the DC power to be output depending on the ON/OFF state of the switch.
An ignition coil includes a primary coil, a secondary coil formed outside the primary coil, and an annular iron core unit. The iron core unit includes: a central iron core extending through the primary coil; an outer iron core having a contact surface in contact with the central iron core, the outer iron core extending from one end of the central iron core and passing outside the secondary coil; and a cover made of an elastomer. The contact surface includes an exposed portion projecting out of the central iron core in an axial direction of the iron core unit. The cover includes a projecting portion covering the exposed portion.
An electronic component 2 includes: an annular heat-generating element 24; an electrically insulating case 6 including a bottom 22 and a side wall 20 and containing the heat-generating element 24; a pillar 8 extending upward from the bottom 22 and passing through the heat-generating element 24; and a thermally conductive filler 9 located within the case 6. The pillar 8 includes an electrically insulating tube 27 and a bar 28 located inside the tube 27 and having a higher thermal conductivity than the filler 9. Preferably, the filler 9 is located between the tube 27 and the bar 28.
An electronic component 2 includes a heat generator 4 and a case 6. The heat generator 4 includes a heat-generating element 24 located inside the case 6 and a top plate 14 located at least in part outside the case 6. The top plate 14 includes a positioner for fixing a position of the heat generator 4 relative to an electronic device. Preferably, the case 6 includes an opening at its upper surface, the top plate 14 includes a lid 18 covering the opening and a protrusion 20 extending from the lid 18 and projecting from the case 6 in plan view, and the positioner is a positioning hole 22 located in the protrusion 20.
An electronic component includes: a heat generator; a case containing therein a part or whole of the heat generator, the case including a body and a bottom; and a filler filling a gap between the heat generator and the case. The body is electrically insulating, and the bottom is electrically insulating and thermally conductive. Preferably, the bottom includes a heat dissipation sheet. The bottom may be made of a ceramic. Preferably, the body includes a main portion and a flange portion located at an end of the main portion that faces the bottom, the flange portion projecting outward or inward from the main portion.
A boot of an ignition coil 2 includes: a main portion 18; a distal end portion 22; a seal portion 24 located between the main portion 18 and the distal end portion 22 and having a larger outer diameter than the main portion 18; and an air passage 28. When the ignition coil 2 is mounted on an internal combustion engine 20, the main portion 18 is exposed to an external environment, the distal end portion 22 is inserted in a plug hole 34 of the internal combustion engine 20, the seal portion 24 separates the external environment and the plug hole 34 from each other, and the air passage 28 connects the external environment and the plug hole 34 to each other. A first opening 44 of the air passage 28 is located in an outer circumferential surface of the main portion 18.
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
An ignition device for an internal combustion engine that uses fuels including hydrogen. The ignition device includes an ignition coil including a primary coil and a secondary coil, a power supply device, a switching element, a spark plug, and a limiting diode. The switching element performs switching between passage and interruption of a primary current. The spark plug causes discharge at a gap, based on a high voltage induced at the secondary coil. The limiting diode includes a Zener diode that is forward-biased when oriented in a direction from the one end to the other end of the secondary coil. A breakdown voltage of the limiting diode is higher than the maximum value of an ON-state voltage obtained by multiplication of a value of a direct-current voltage applied to the primary coil by a ratio of the number of turns of the secondary coil to that of the primary coil.
A transformer includes: a coil: a core enclosing the coil, the core including a first surface, a second surface adjoining the first surface, and a third surface opposite to the first surface and adjoining the second surface; and a plurality of radiator plates each of which covers a part of the core. The first and third surfaces are covered by different radiator plates of the plurality of radiator plates. Preferably, the core further includes a fourth surface opposite to the second surface and adjoining the third surface, and the second and fourth surfaces are covered by different radiator plates of the plurality of radiator plates.
An ignition coil for use in an internal combustion engine includes a coil assembly including a primary coil and a secondary coil, a lead terminal electrically connected to the secondary coil, a noise prevention resistor connected to a spark plug, and a case. An internal space of the case includes a first space holding the coil assembly and the lead terminal and a second space including the noise prevention resistor. The case includes a pair of guides protruding toward the first space. The lead terminal passes through a gap between the pair of guides and is in contact with an exposed surface of the noise prevention resistor. This can reduce deviation of the lead terminal. As a result, the secondary coil and the noise prevention resistor can be electrically connected to each other without intervention of a high-voltage terminal therebetween.
H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
In a transformer, forward and reverse secondary coils are connected to a single reference electrode or any of a plurality of reference electrodes. The forward secondary coil includes first and second winding portions wound around a forward iron core. The reverse secondary coil includes third and fourth winding portions wound around a reverse iron core. A first primary coil is formed around the first and third winding portions. The second primary coil is formed around the second and fourth winding portions. The single reference electrode or each of the plurality of reference electrodes is in the form of a plate.
A power conversion device suppresses voltage variation of a power supply bus. The device includes a variation compensation circuit and a control circuit. The variation compensation circuit includes: a first capacitor connected to the power supply bus; a second capacitor connected in series between the first capacitor and a ground; an auxiliary capacitor; and a converter including a switching element and having a voltage step-down function, the converter being connected to the second capacitor and the auxiliary capacitor. The control circuit includes an active power calculating section that calculates instantaneous active power ip in the variation compensation circuit. The control circuit controls the voltage Vc of the auxiliary capacitor using the instantaneous active power ip.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
0 which is twice a frequency of the single-phase alternating current. The control circuit uses the proportional resonant control section to generate a signal for controlling the switching element.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
An ignition device includes a coil unit and an igniter. The coil unit includes a primary coil and a secondary coil. The primary coil includes a main primary coil and an auxiliary primary coil formed by winding a single primary conductor on a primary bobbin. The secondary coil is formed by winding a secondary conductor on a secondary bobbin. A DC voltage is applied to an intermediate section of the primary conductor between the main primary coil and the auxiliary primary coil. The igniter controls current flowing into the main primary coil or the auxiliary primary coil. The primary bobbin includes a bobbin body and a hooking part protruding from the bobbin body. The main primary coil and the auxiliary primary coil are wound on an outer peripheral surface of the bobbin body to the same direction. A part of the intermediate section is hooked on the hooking part.
H01T 15/00 - Circuits specially adapted for spark gaps, e.g. ignition circuits
H01F 27/32 - Insulating of coils, windings, or parts thereof
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
An igniter controls a current flowing in a coil unit for supplying a high voltage to a spark plug for use in an internal combustion engine. The igniter includes: a pyrogenic power element, a metal block, a lead frame, and a controller. The lead frame electrically connects the metal block and the coil unit to each other. The controller controls the operation of the power element. The power element is fixed directly to the metal block by soldering at a surface of the power element on one side, and is electrically connected to the controller at a surface of the power element on the other side. With this configuration, heat generated during the operation of the power element is transferred smoothly in a moment to the metal block. As a result, temperature increase at the power element is suppressed during the operation of the power element.
A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit controls soft switching of each switching element in the first full-bridge circuit and the second full-bridge circuit. An inductor current flowing through an equivalent inductor at a time of switching of turning on or off each switching element is greater than or equal to a threshold current, the equivalent inductor being equivalent to the transformer and the inductor. The control circuit outputs predetermined power by changing a voltage output period of the first full-bridge circuit and a voltage output period of the second full-bridge circuit while fixing the switching frequency and keeping constant a polarity inversion period in which the output of the second full-bridge circuit and the output of the first full-bridge circuit have reverse polarities. This enables performing ZVS operations by simple control and reducing switching losses.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/38 - Means for preventing simultaneous conduction of switches
H02M 3/337 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
The DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer. A control circuit controls soft switching of each switching element. An inductor current flowing through the transformer or an equivalent inductor equivalent to the transformer at a time of switching of turning on or off each switching element is greater than or equal to a threshold current. When the first full-bridge circuit and the second full-bridge circuit have different output voltages V1 and V2, the control circuit causes the inductor current at start times t4 and t8 of a polarity inversion period to approach the inductor current at end times t5 and t9, the polarity inversion period being a period in which V1 and V2 have reverse polarities. This suppresses an increase in loss resulting from a flow of large current and enables ZVS control.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/38 - Means for preventing simultaneous conduction of switches
H02M 3/337 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit performs soft switching of each switching element in the first full-bridge circuit and the second full-bridge circuit. An inductor current flowing through an equivalent inductor at a time of switching of turning on or off each switching element is greater than or equal to a threshold current, the equivalent inductor being equivalent to the transformer and the inductor. The control circuit outputs predetermined power by changing a voltage output period of the first full-bridge circuit and a voltage output period of the second full-bridge circuit while fixing the switching frequency and keeping a polarity inversion period at a value greater than or equal to a fixed value, the polarity inversion period being a period in which the output of the second full-bridge circuit and the output of the first full-bridge circuit have reverse polarities. This enables performing ZVS operations by simple control and reducing switching losses.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
An ignition coil includes a not-illustrated coil, a plate assembly, and a case assembly. The plate assembly and the case assembly are combined with each other by laser welding at a recess and a rib (projection) which are respective abutting portions, thereby forming storage spaces for storing the coil.
H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils
B23K 26/324 - Bonding taking account of the properties of the material involved involving non-metallic parts
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29K 67/00 - Use of polyesters as moulding material
B29K 105/00 - Condition, form or state of moulded material
B29L 31/34 - Electrical apparatus, e.g. sparking plugs or parts thereof
21.
Electronic equipment and electronic control device
Electronic equipment includes a plurality of heat generating elements, a single heat sink, and a single cover. The heat generating elements are arranged adjacent to one another in a one-dimensional array in a predetermined alignment direction. The faces of the heat generating elements on one side are fixed directly or indirectly to the heat sink. The faces of the heat generating elements on the other side are in direct or indirect contact with the cover. The cover is fixedly screwed to the heat sink at opposite ends in the alignment direction on the outer side of the heat generating elements. The heat generating elements are sandwiched and held between the heat sink and the cover. This allows heat generated by the heat generating elements to be efficiently radiated via the heat sink and allows the heat generating elements to be easily connected to the heat sink.
A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit switches between first control for changing the phases of switching elements in the first bridge circuit and switching elements in the second bridge circuit and second control for changing the switching frequencies (drive angular frequencies) of the switching elements, in accordance with target power, so that an inductor current flowing during a dead time of the switching elements becomes larger than or equal to a threshold current. The inductor current in the first control is larger than the inductor current in the second control.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit alternately turns on and off switching elements. At a dead timing when the switching elements are switched, an inductor current flowing through an equivalent inductor that is equivalent to the transformer and the inductor is larger than or equal to a threshold current. The threshold current is set so that the energy stored in the equivalent inductor becomes greater than or equal to the total energy stored in capacitors that are respectively connected in parallel with the switching elements.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit causes output power to follow target power by changing switching frequencies (angular frequencies) of switching elements so that that an inductor current flowing during a dead time of the switching elements becomes larger than or equal to a threshold current.
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
An electronic device includes a housing, a circuit substrate, a connector, and a seal obtained by a sealant having fluidity being hardened. The housing includes a lower case and an upper case that covers the lower case. The connector is disposed between the upper case and the lower case. The lower case has a case groove. A connector projection disposed on the connector and a case projection disposed on the upper case are fitted into the case groove. The connector includes a connector groove, and the case projection is fitted into the connector groove. An obstructor for inhibiting flow of the sealant is disposed in the case groove or the connector groove.
This ignition coil includes: a bar-shaped resistor electrically connected to a terminal of a coil assembly via a relay; a case for storing these; and a filler filling gaps inside the case. The case includes a body, a cylindrical output portion protruding from the body, and an annular holding portion protruding inward from an inner circumferential surface of the output portion and formed integrally with the output portion. A part of the resistor is inserted into the holding portion, and thus a first internal area located on the body side with respect to the holding portion and shut off from outside is formed in an internal area of the output portion. The filler fills the first internal area.
This igniter assembly 220 includes: an igniter 2 provided with a lead terminal 20; a body 1 made of resin and storing the igniter 2; and an internal terminal 3 fixed to the body 1 and having one end electrically connected to the lead terminal 20. The internal terminal 3 has another end extending outward of the body 1.
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
In a conventional power supply system, it was difficult to quickly activate a motor load or the like after performing switching to an isolated operation. A power conditioner of the present invention comprises: a DC-DC converter part for converting a direct-current power from a direct-current power source into a given voltage; an inverter part for converting a direct-current power from the DC-DC converter part into an alternating-current power; a switch disposed between an alternating-current power output end of the inverter part and a utility power source; and a control part for controlling an output current of the alternating-current power from the inverter part, wherein, in response to opening the switch to cause switching to the isolated operation, the control part is operable, when a given condition is not satisfied, to control the output current such that the output current does not exceed a first upper limit preliminarily determined based on a rated output current value of the power conditioner, and, when the given condition is satisfied, to control the output current such that the output current does not exceed a second upper limit greater than the first upper limit.
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 7/35 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 1/10 - Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
A power converter includes: an inverter converting DC power to AC power and outputting the AC power to first and second voltage terminals of a connection terminal unit; and switches RC. The switches RC include a first protection switch provided to a first line connecting the inverter and the first voltage terminal together, a second protection switch provided to a second line connecting the inverter and the second voltage terminal together, and a voltage switch connected in series between the second line and a neutral terminal. A load connection terminal is connected to a line connecting between the first line and the voltage switch.
H02M 7/537 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 1/02 - Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
H02S 40/32 - Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02J 7/35 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
30.
Electric cable connecting terminal and method for connecting together electric cable connecting terminal and electric cable
Provided are an electric cable connecting terminal reducing unwanted overflow of solder out of an electric cable connecting portion to a connector portion during soldering, and a method for joining an electric cable connecting terminal and an electric cable. An electric cable connecting terminal for electrically connecting an electric cable to an external conductor includes a connector portion to be attached to the conductor, and an electric cable connecting portion having a connecting surface to which the electric cable, which is a bundle of core wires, is connected by soldering. The electric cable connecting portion includes a crimp portion to be swaged to hold the electric cable, and a step portion protruding from the connecting surface between the connector portion and the crimp portion.
H01R 4/18 - Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one anotherMeans for effecting or maintaining such contactElectrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
H01R 4/62 - Connections between conductors of different materialsConnections between or with aluminium or steel-core aluminium conductors
H01R 43/02 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
A grid connection power conversion device for connecting a distributed power supply to a three-phase commercial power system is provided. The power conversion device comprises an inverter, an instantaneous voltage detection circuitry to detect a maximum three-phase instantaneous voltage value of the commercial power system, a line voltage detection circuitry to detect a maximum value of each of three line voltages, an instantaneous voltage drop detection circuitry to detect an instantaneous voltage drop, and an output current control circuitry to control an output current value from the inverter. When the instantaneous voltage drop detection circuitry detects an instantaneous voltage drop, the output current control circuitry reduces the output current value from the inverter to an output current value corresponding to a minimum value among the four maximum voltage values which are the maximum three-phase instantaneous voltage value and the maximum values of the three line voltages.
H02M 7/539 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
H02M 7/5395 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
H02M 5/04 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
G05F 1/67 - Regulating electric power to the maximum power available from a generator, e.g. from solar cell
G05F 1/70 - Regulating power factorRegulating reactive current or power
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
A grid connection power conversion device having isolated operation function for connecting a distributed power supply to a commercial power system is provided which comprises an inverter for converting DC power to AC power, a capacitor connected between the inverter and the commercial power system, a commercial voltage amplitude detection circuitry, an amplitude adjustment circuitry to increase an amplitude of an output voltage from the inverter stepwise from a given value to match the amplitude of the commercial system voltage, and a start-up control circuitry to control the grid connection power conversion device so that after the amplitude adjustment circuitry adjusts the amplitude of the output voltage from the inverter, after the start-up, to match the amplitude of the commercial system voltage detected by the commercial voltage amplitude detection circuitry, the start-up control circuitry connects the inverter to the commercial power system to start grid-connected operation.
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02M 1/36 - Means for starting or stopping converters
H02M 3/04 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
H02M 7/537 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 3/40 - Synchronising a generator for connection to a network or to another generator
34.
Grid connection power conversion device and start-up control method therefor
A grid connection power conversion device is provided in which an amplitude of an output voltage from an inverter is increased stepwise from 0, after start-up of the power conversion device, to adjust the amplitude of the output voltage from the inverter to match an amplitude of a commercial system voltage as detected, and thereafter the inverter is connected to the commercial power system to start grid-connected operation. This makes it possible to prevent the voltage applied to a capacitor provided between the inverter and the commercial power system from abruptly increasing from 0V to the commercial system voltage at the start-up of the power conversion device, thereby making it possible to reduce an inrush current to the capacitor at the start-up without using an inrush current prevention circuitry.
H02M 1/36 - Means for starting or stopping converters
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 3/04 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02J 3/42 - Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronism is achieved
35.
Grid independent operation control unit, power conditioner, and grid independent operation control method
A grid independent operation control unit includes a load current estimator to estimate a load current supplied to stand-alone power system in accordance with an output current of the inverter and an output voltage, and a feedback controller configured to PWM control the inverter at a duty ratio feedback calculated to cause the inverter to output an output voltage command value in accordance with the output voltage and the load current. The feedback controller is configured to PWM control the inverter at a duty ratio feedback calculated for output of a normalized output voltage command value obtained by normalizing the output voltage command value with the DC bus voltage in accordance with normalized output voltage obtained by normalizing the output voltage with the DC bus voltage and normalized load current obtained by normalizing the load current with the DC bus voltage.
G05D 17/00 - Control of torqueControl of mechanical power
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
H02J 3/01 - Arrangements for reducing harmonics or ripples
An abnormality detection device for a grid interconnection relay to detect an abnormality of the grid interconnection relay upon switching to grid independent operation, and includes an abnormality detector to execute commercial power system voltage determination of determining whether or not there is a commercial power system voltage, and first voltage determination to be executed if it is determined that there is no commercial power system voltage through the commercial power system voltage determination, of causing the power conditioner to chronologically alternately output monitor voltages having different values in a state where a contact of the grid interconnection relay is controlled to open and executing abnormality determination as to the grid interconnection relay according to whether or not each of the monitor voltages is followed by difference between a voltage of the power conditioner and voltage of the commercial power system with respect to corresponding one of the monitor voltages.
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
G01R 31/327 - Testing of circuit interrupters, switches or circuit-breakers
H02J 3/16 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
H02H 7/122 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
37.
Islanding operation detection and islanding operation detection method
An islanding operation detection device for a distributed power supply comprising an inverter connected to a commercial system power supply comprises: a commercial system frequency measurement circuitry; a reactive power injection amount calculation circuitry to calculate an amount of reactive power injection; a feedback signal generation circuitry; a reactive current control circuitry to feedback-control an output current command value to the inverter; an output current control circuitry to update the reactive current command value when a phase angle of the commercial system voltage is in the range of 90N°±Δφ so as to control an output current value of the inverter to follow the output current command value; and an islanding operation detection circuitry to detect whether or not the distributed power supply is in islanding mode, based on a commercial system frequency when the reactive power corresponding to the calculated amount of reactive power injection is injected.
Disclosed herein is a spacer fixing structure including a core member constituting a core to be wound with a coil; and a plate spacer fixed to the core member. The spacer has a loop shape. A communication groove is formed in at least one surface of front and back surfaces of the spacer, and extends radially to communicate with inner and outer peripheries of the spacer. A region of the at least one surface of the spacer other than a grooved portion is left as a flat surface. At least the flat surface of the spacer is adhered to the core member via an adhesive layer made of an adhesive.
H01F 27/32 - Insulating of coils, windings, or parts thereof
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 27/26 - Fastening parts of the core togetherFastening or mounting the core on casing or support
H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
39.
Relay abnormality detection device and power conditioner
A relay abnormality detection device to detect an abnormality of a grid interconnection relay upon switching to grid independent operation and includes an abnormality detector to execute commercial power system voltage for determining whether or not there is a commercial power system voltage, if there is commercial power system voltage through the commercial power system voltage determination, first current determination of abnormality determination as to the specific relay according to whether or not there is an input current to the power conditioner in a state where a contact of the specific relay is controlled to open, and if there is no commercial power system voltage through commercial power system voltage determination, second current determination of abnormality determination as to the specific relay according to whether or not there is an output current from the power conditioner in the state where the contact of the specific relay is controlled to open.
G01R 31/327 - Testing of circuit interrupters, switches or circuit-breakers
H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
H02M 7/44 - Conversion of DC power input into AC power output without possibility of reversal by static converters
H01R 4/62 - Connections between conductors of different materialsConnections between or with aluminium or steel-core aluminium conductors
H01R 43/02 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
Provided are: a smoothing capacitor connected in parallel to the DC power source; a bridge circuit including switching elements for converting DC power to AC power, flywheel diodes connected in reversely parallel, and flywheel-and-separation diodes connected in series to the flywheel diodes and serving concurrently as flywheel and separation diodes; an interconnection reactor on an output side, provided on AC output lines connecting the bridge circuit and an AC power source; and a separation circuit for separating the smoothing capacitor and the interconnection reactor from each other during a flywheel period of the flywheel diodes. The separation circuit includes separation switching elements and the flywheel-and-separation diodes. The separation switching elements are respectively connected between the two AC output lines and two series connection points between the flywheel diodes and the flywheel-and-separation diodes, so as to short-circuit the AC output lines.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
The present system 1 includes a distributed power source 2, a storage battery 4, a bidirectional inverter 7 having a smoothing capacitor 6 on its DC side, and a control section 10 for controlling the entire system, and supplies AC power to a load 9 while being interconnected with a power system 8. When active power supplied from the distributed power source 2 and/or the storage battery 4 to the smoothing capacitor 6 is equal to or greater than active power of load power, the control section 10 controls a power factor of inverter output current outputted from the bidirectional inverter 7 so as to coincide with a power factor of load current flowing to the load 9.
An ignition coil capable of maintaining reliable insulation performance over a long period of time. A coil main body unit, for housing a primary coil, a secondary coil and a switching element, includes a case main body in which a housing space is provided, and a case lower portion which abuts the perimeter of the case main body. The primary coil and the secondary coil, which are placed in the case lower portion, are covered by the case main body. The secondary coil is configured by winding a second winding around a secondary bobbin, through which a central hole is extended in the horizontal direction, and the outer periphery of the same is covered by the case lower portion and a protective cap and is filled with a first material. When the primary coil is placed in the central hole, the remaining gap is filled with a secondary material.
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
An electric terminal member includes a connector portion (4), a wire connecting portion (6) spaced apart from the connector portion and lying parallel to the connector portion, and a bridge portion (8) extending between one end of the connector portion and one end of the wire connecting portion in a direction transverse to any one of the connector and wire connecting portions and for connecting the connector portion with the wire connecting portion. The wire connecting portion has a retaining hole (12). The wire connecting portion also has a flux applying surface (18) and a wire holding surface (16) opposite to each other, the flux applying surface facing towards the connector portion whereas the wire holding surface faces in a direction away from the connector portion.
H01R 4/00 - Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one anotherMeans for effecting or maintaining such contactElectrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
12 - Land, air and water vehicles; parts of land vehicles
35 - Advertising and business services
Goods & Services
Machines pour la fabrication d'installations électriques et
électroniques comme pièces de véhicules terrestres, leurs
moteurs et accessoires ainsi que pour la fabrication
d'installations électriques et électroniques; systèmes
d'allumage pour les moteurs à explosion, compris dans cette
classe; moteurs électriques, générateurs électriques compris
dans cette classe; pièces de véhicules terrestres et de
moteurs de véhicules, particulièrement les capteurs, les
vannes comme pièces de moteurs, les dispositifs d'allumage
comme pièces de moteurs à explosion et les bougies. Transformateurs électriques, câbles et distributeurs. Appareils de climatisation, de ventilation et de
conditionnement de l'air, aussi pour véhicules, mais pas
pour des besoins ménagers; installations de ventilation et
de refroidissement et systèmes de ventilation et de
refroidissement assemblés à partir des produits compris dans
cette classe, mais pas pour des besoins ménagers. Accessoires électriques et électroniques pour véhicules
terrestres, comme les appareils de commande; carrosseries et
pièces de carrosserie pour véhicules terrestres; remorques
et semi-remorques; moteurs électriques comme pièces de
véhicules (aussi pour une utilisation dans des véhicules
terrestres). Direction et gestion d'entreprises, conseil dans le domaine
de la direction et de la gestion d'entreprises.
