Abstract: An arrangement structure of wiring member for rotating electrical machine is configured in such a manner that a wiring member for rotating electrical machine including a plurality of conductive wires and connecting coil ends of a stator to electrodes of a terminal block in a rotating electrical machine is arranged on an arranging target member. The wiring member for rotating electrical machine includes a holding portion including a molded resin so as to cover all the plurality of conductive wires together and holds the plurality of conductive wires. A cushioning member comprising an elastic body is provided between the holding portion and the arranging target member. The holding portion is arranged on the arranging target member via the cushioning member.

Abstract: Embodiments of this application provide a busbar assembly, a motor, an electrical product, and a method for manufacturing a busbar assembly. The busbar assembly includes a busbar for conducting electricity and a busbar holder for supporting the busbar. The busbar extends in a circumferential direction, a height of the busbar in an axial direction is greater than a thickness in a radial direction, and the busbar holder is integrally molded with the busbar. The busbar includes a plurality of convex portions extending in the axial direction, and the convex portions are exposed from the busbar holder.

Abstract: A stator is improved in work efficiency of mounting to a stator core is provided. The stator includes insulators sandwiching the stator core therebetween. The stator core includes a plurality of teeth that radially projects. Each of the insulators includes a plurality of tooth covering portions that radially projects. The tooth covering portions cover the teeth. In a facing portion of one of the insulators facing the stator core, a peripheral portion projects more than a center portion. In a facing portion of the other of the insulators facing the stator core, a center portion projects more than a peripheral portion.

Abstract: A canned motor device includes a base, a fixed seat, a motor unit and a motor cover. Each of the base and the fixed seat is formed in a shape of a hollow cylinder that surrounds an axis. The base has an inner base surface surrounding the axis and defining an accommodating space. The fixed seat is disposed in the accommodating space and has an inner seat surface, an outer seat surface, a plurality of recesses and a plurality of first heat-dissipating fins. The recesses are indented from the outer seat surface and extend toward the inner seat surface. Each of the first heat-dissipating fins is located between two adjacent ones of the recesses.

Abstract: A motor is provided with a bracket, a terminal provided at the bracket, and a frame. The bracket is fixed to the frame. The terminal is electrically connectable to an outside. The bracket is provided with an outer peripheral surface including an opening portion. A part of the terminal is arranged inside the opening portion.

Abstract: A control device includes a first substrate provided with a chip electronic component; a second substrate having a surface provided with electronic components including a tall component taller than the chip electronic component, the surface of the second substrate facing a surface of the first substrate that is provided with the chip electronic component; and a heat sink disposed between the first substrate and the second substrate. The heat sink includes a component receiving portion and a heat dissipation portion, the component receiving portion being configured to receive the tall component, the heat dissipation portion being configured to perform heat exchange between the first substrate and the second substrate, and the component receiving portion and the heat dissipation portion being provided so as not to overlap with each other as viewed in a facing direction in which the first substrate and the second substrate face each other.

Abstract: A joint shaft includes at least one cross pin, the at least one cross pin including oppositely disposed pins on each of which a shaft member is attached; and a generator attached to at least one of the shaft members. The joint shaft may further include a sensor energized by the generator and attached to the joint shaft and/or a logic configured to evaluate an electrical output of the generator.

Abstract: An axial flux motor includes a housing; a drive shaft disposed within the housing; at least one rotor; and at least one stator. The at least one rotor includes a diametrically-magnetized single pole pair magnetic ring having a rotor aperture defined through the center of the magnetic ring, where the drive shaft extends through the rotor aperture and where the at least one rotor is fixed to the drive shaft. The at least one stator includes a number of conductive windings and a stator aperture, where the drive shaft extends through the stator aperture and where the drive shaft is rotatable within the aperture. The at least one stator is configured to generate an axial magnetic field that causes the at least one rotor to rotate, thereby rotating the drive shaft.

Abstract: Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold that, in effect, provides a threshold to part movement and confers a degree of hysteresis, preventing movement until a sufficiently large energizing force is applied. The effect may be further altered by use of an additional magnetically induced force interaction with at least one further member to urge or slow movement once started and/or to prevent movement once a new position is reached.

Abstract: A motor for electric power tools according to an embodiment includes: a rotor having a rotational shaft; a stator having a coil to rotate the rotor; a first substrate mounting a sensor element to detect a rotational position of the rotor; and a second substrate mounting a switching element to change, based on a result of detection by the sensor element, a conducting direction in which a current flows with respect to the coil. The first substrate and the second substrate are arranged side by side along, and intersect at right angles with, the rotational shaft.

Abstract: The motor cooling member includes: an oil feed port to which oil is fed; a plurality of discharge ports that discharge oil toward a motor; a basis oil passage connected to the oil feed port; and a plurality of derived oil passages each of which is formed by branching from the basis oil passage so as to correspond to each of the plurality of discharge ports and is formed so as to connect the basis oil passage to each of the discharge ports, and which are formed in different shapes from each other.

Abstract: An example system includes a dynamo-electric machine. The dynamo-electric machine includes a rotor that is cylindrical and that is configured for rotation and a stator that is arranged relative to the rotor. The stator has a stepped configuration that defines a first diameter for the stator and a second diameter for the stator. The first diameter is greater than the second diameter. Zones of the stator at the first diameter hold direct-axis (D-axis) windings and zones of the stator at the second diameter hold quadrature axis (Q-axis) windings. An airgap between the rotor and the Q-axis windings is greater than an airgap between the rotor and the D-axis windings.

Abstract: The present disclosure provides a brushed direct-current slip ring motor comprising: a commutator-armature system secured to a stationary shaft of a motor base, the commutator-armature system comprising: commutator segments connected via wires, teeth in a circular orientation forming slots, and commutator leads connected to the commutator segments and secured to the wires; a top slip ring above the commutator segments; a bottom slip ring below the commutator segments, a rotor configured to axially rotate responsive to an electromagnetic field produced from the commutator-armature system comprising: a plurality of magnets configured to axially rotate with the rotational shaft; a first brush system in contact with one or more of the commutator segments, the first brush system being configured to axially rotate with the rotor; and a second brush system in contact with one or more of the commutator segments, the second brush system being configured to axially rotate with the rotor.

Abstract: A laminated iron core includes a plurality of blanked iron core pieces laminated together, a continuity of side parts of the iron core pieces configuring a side surface of the laminated iron core. The side part of each iron core piece includes a specific light reflection area having a prescribed width along a circumferential direction, where the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece, and a striped pattern, configured by the specific light reflection areas, exists on the side surface of the laminated iron core.

Abstract: Construction of a permanent magnet rotor assembly having a plurality of magnetic poles and comprising a number of magnetic pole pieces arranged in circular array. Two sets of permanent magnets—one set magnetised in circumferential direction of the rotor and the second set providing flux in axial direction of rotor, generating a magnetic flux focused through the pole piece and interacting with the magnetic flux of the stator. End-plates made of magnetic material are present such there is an axial gap between the them and the array of magnetic pole pieces. Circumferentially magnetised magnets are placed in the circumferential gaps between the pole pieces, whereas the magnets providing flux in axial direction are placed in the gaps between the array of pole pieces and end-plates.

Abstract: There are provided a core unit manufacturing apparatus and a core unit manufacturing method including: a molding device that fills a resin into a space portion in a core body; a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; and a core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device. The resin transfer unit and the core transfer unit are arranged such that: the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position.

Abstract: A magnetically-driven electricity-producing generator having an anti-lock assembly generates electricity indicative of a full pulse wave environment while creating a repulsive force that reduces the force necessary to rotate the shaft. The generator includes three rotor assemblies, each having three longitudinally extending rotor magnets oriented such that outwardly facing poles establish a N-S-N pattern that, when passed in proximity to a corresponding coil pack, produces electricity having a full pulse wave form. The magnetic anti-lock device utilizes opposing magnets to reduce the varying force required to rotate the shaft and increases efficiency of the rotating shaft. The magnetic anti-lock device includes at least one inner magnet attached to the rotating shaft and at least one outer magnet fixed in position relative to the rotating shaft. The inner magnet passes the outer magnet each time the shaft rotates creating a repulsive force that reduces the force necessary to rotate the shaft.

Abstract: An electromagnetic actuator including an attractor to exert a magnetic attractive force in one side in a first direction, a frame, and a lever. The frame includes a frame body fixed to the attractor, and a support on an oblique-direction side relative to the attractor. The lever includes a fulcrum portion pivotally supported by the support, a first displaceable portion arranged on the other side in the second direction relative to the fulcrum portion and on the other side in the first direction relative to the attractor and magnetically attractable by the attractor to be displaced to the one side in the first direction, and a second displaceable portion arranged on the one side in the first direction relative to the fulcrum portion and on the one side in the second direction relative to the attractor and/or the frame and displaceable away from the attractor and/or the frame by the pivot of the lever.

Abstract: An energy harvester includes an elongated tubular casing extending around a longitudinal axis between opposed first and second ends. A body is arranged in the casing. A helical electrical winding is wound around the longitudinal axis. The body is arranged to move along the longitudinal axis with alternate motion away from the first end towards the second end and away from the second end towards the first end. As a result of this alternate motion, an electromotive force is produced in the at least one helical electrical winding. Furthermore, at least one of the first and second ends includes a piezoelectric transducer that is configured to co-operate in a kinetic energy transfer relationship with the at least one body to generate an electric voltage as a result of the at least one body reaching, in the alternate motion, an end-of-travel position towards the piezoelectric transducer.

Abstract: An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising: a central mast, an electrically conductive coil assembly fixedly mounted to the mast, a mount for the coil assembly, a magnetic core assembly movably mounted to the mast for vibrational motion along an axis, wherein the magnetic core assembly comprises: an outer core, comprising a one-piece tubular body, which encloses the electrically conductive coil assembly side, first and second end cores magnetically coupled to the outer core at respective first and second ends of the outer core, the first and second end cores extending radially inwardly and enclosing respective first and second opposite edges of the coil assembly, and first and second magnets spaced along the axis, contacting and being magnetically coupled to the respective first and second end cores, and defining therebetween a gap in the magnetic core assembly through which the mount extends.

Abstract: A magnetic field propulsion unit includes a magnetic field generating device with multiple conductive lines conduct a current to generate a magnetic field; a contact breaker arrangement individually transitions each of the multiple conductive lines from a conductive state to a non-conductive state; an energy supply unit provides the magnetic field generating device with electrical energy; and a control unit controls the energy supply unit so that energy supply to each individual conductive line is controlled and control the contact breaker arrangement. The multiple conductive lines are arranged along a longitudinal axis. The control unit supplies a first conductive line with electrical energy so that a first magnetic field surrounding the first conductive line is generated, transitions the first conductive line to a non-conductive state, and supplies a second conductive line with electrical energy so that a second magnetic field is generated.

Abstract: A power converter includes a power conversion controller configured to determine whether or not an output terminal is misconnected to a system power supply based on a current between a power converter and the output terminal and a voltage between the power converter and the output terminal, and to perform a control to stop power conversion in the power converter when determining that the output terminal is misconnected to the system power supply.

Abstract: A power supply circuit having a first capacitor, a transformer including a primary coil having a voltage of the first capacitor applied thereto, a secondary coil and an auxiliary coil, a second capacitor having a voltage from the auxiliary coil applied thereto, a transistor controlling an inductor current flowing through the primary coil, a control circuit outputting a first control signal when supply of the input voltage is unstopped, or is stopped yet a voltage of the second capacitor reaches a first level, and outputting a second control signal thereafter when the voltage of the second capacitor further reaches a second level, a first drive circuit outputting a first drive signal for switching control of the transistor in response to the first control signal, and a second drive circuit outputting a second drive signal for controlling on-resistance of the transistor to discharge the first capacitor, in response to the second control signal.

Abstract: A method for switching control of a multi-level converter. The multi-level converter has a plurality of modules. A total switching state is formed from respective module switching states of the plurality of modules by the switching control. A current state of charge of all energy stores of the multi-level converter is provided continuously to the switching control. The switching control is divided into an offline part and an online part, wherein, in the offline part, a plurality of offline switching tables is calculated by way of optimizers in a continuous sequence and, for calculation of a respective offline switching table of the plurality of offline switching tables, a respective cost function is minimized according to at least one predefined offline optimization criterion for evaluating the total switching state. In the online part, an online switching table is selected from the plurality of offline switching tables in a continuous sequence.

Abstract: According to an embodiment, a capacitor diagnosis device includes a sensor, a frequency spectrum analysis unit, a frequency component extraction unit, and a diagnosis processing unit. The sensor detects a physical quantity that changes with an current flowing through a capacitor in a power conversion unit (PCU) for converting DC power smoothed by the capacitor connected in parallel to DC link(s) into AC power according to a power running operation. The frequency spectrum analysis unit generates a frequency spectrum based on a detection result of the sensor detected during the power running operation of the PCU. The frequency component extraction unit extracts a component of a specific frequency band related to a frequency depending on a configuration of the PCU based on the frequency spectrum. The diagnosis processing unit diagnoses a state of the capacitor based on at least a magnitude of the extracted component of the specific frequency band.

Abstract: A power controller with short-circuit protection is disclosed to control a power switch, which is connected in series with a current-sense resistor and an inductive device between two power lines. The current-sense resistor provides a current-sense signal. The power controller includes a PWM signal generator and a short-circuit protection circuit. The PWM signal generator generates a PWM signal to the power switch to create switching cycles, each consisting of an ON time and an OFF time. The short-circuit protection circuit has a high-pass filter and a condition detector. The high-pass filter high-pass filters the current-sense signal to provide a filtered signal to the condition detector, which determines whether the filtered signal fits a predetermined condition during the ON time to generate a short-circuit protection signal and to prevent the power switch being turned on.

Abstract: A protective device intended to protect a power converter, the protective device includes a set of at least one sensor, each sensor in the set of at least one sensor making it possible to deliver a measurement representative of the instantaneous current delivered at the output of a power converter on a phase in the set of at least one phase, a protective device receiving the measurement representative of the instantaneous current delivered by the set of at least one sensor and connected to a control device and to the power converter such that the commands delivered by the control device are transmitted to the power converter via the protective device, the protective device being configured to inhibit the commands delivered by the control device when the absolute value of the measurement representative of the instantaneous current and delivered by at least one sensor in the set of at least one sensor exceeds a predetermined first threshold S1 such that the power switches of the power converter are kept in the

Abstract: A snubber apparatus includes N parallel charge paths, each of which has a positive-side capacitor, a first diode, and a negative-side capacitor sequentially connected in series between a positive-side terminal and a negative-side terminal, and that allows current to flow from the positive-side terminal's side to the negative-side terminal's side. The snubber apparatus includes N+1 parallel discharge paths, each of which has a second diode connected between the negative-side terminal or the negative-side capacitor in the k-th charge path of the N charge paths, and the positive-side capacitor in the (k+1)-th charge path of the N charge paths or the positive-side terminal, and that allows current to flow from the negative-side terminal's side to the positive-side terminal's side via at least one of the negative-side capacitor and the positive-side capacitor. At least one of the charge paths has a plurality of sections that are turned and adjacent to each other.

Abstract: An integrated circuit for a power supply circuit. The integrated circuit includes an oscillator circuit configured to output an oscillator voltage that rises with a predetermined slope from a first voltage, upon an inductor current of the power supply circuit becoming smaller than a first predetermined value, an error voltage output circuit configured to output an error voltage corresponding to a difference between a reference voltage and a feedback voltage corresponding to the output voltage, a drive circuit configured to turn on and off a transistor of the power supply circuit respectively upon the inductor current becoming smaller than the first predetermined value, and upon the oscillator voltage reaching a second voltage that is based on the error voltage, and an output circuit configured to change the first and/or second voltage based on a rectified voltage obtained by full-wave rectification of the AC voltage, and to output the changed voltage.

Abstract: An assembly for powering a first circuit, including at least one ferrite bead in series with a diode between a first terminal of application of a first voltage and a first terminal of said first circuit.

Abstract: The present disclosure provides power semiconductor module, comprising at least three non-jumping power terminals at a non-jumping potential, wherein multiple power semiconductors and at least one first capacitor are integrated within a package and electrically connected between a first non-jumping power terminal and a second non-jumping power terminal of the at least three non-jumping power terminals; and at least one jumping power terminal at a jumping potential. A first jumping power terminal of the at least one jumping power terminal is electrically connected to one terminal of a power inductor and a third non-jumping power terminal of the at least three non-jumping power terminals is electrically connected to the other terminal of the power inductor; wherein at least one second capacitor is electrically connected between the third non-jumping power terminal and at least one of other non-jumping power terminals.

Abstract: The invention provides a conversion circuit for converting input voltage into output voltage, including: a full-wave rectifier circuit including first and second branches connected in parallel, and each including a secondary winding and a rectifier switch; a first switch branch connected to midpoint of the first branch, and including first to fourth switches connected in series; a first resonant unit connected between connection node of the first and second switches and midpoint of the second branch; a second resonant unit connected between connection node of the third and fourth switches and midpoint of the second branch; a first primary winding connected in series to the first resonant unit; and a capacitor connected between connection node of the second and third switches and midpoint of the second branch. The conversion circuit of the invention improves conversion efficiency while maintaining smaller voltage stress on switches.

Abstract: A circuit device includes a regulator, a charge pump circuit, an overvoltage detection circuit, and a control circuit. The regulator regulates a power supply voltage. The charge pump circuit outputs, a gate control voltage, to a gate node of an N-type transistor provided between a power supply node and a load, based on a regulated voltage. The overvoltage detection circuit detects an overvoltage of the regulated voltage. The control circuit controls to stop the charge pump circuit when the overvoltage is detected by the overvoltage detection circuit.

Abstract: Various embodiments relate to a current loop controller configured to control a boost converter, including: an amplifier configured to scale a measured current; a subtractor configured to subtract the scaled measured current from a desired current and to output an error signal; a controller including an integral part and a proportional part configured to produce a control signal based upon the difference signal and a gain value, wherein the gain value is based upon a measured value tps, wherein tps is the on-time plus the secondary time of the boost converter; and a switch signal generator configured to produce a gate signal based upon the control signal, wherein the gate signal controls the boost converter.

Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

Abstract: A convenient electronic circuit in which a switch is able to be switched through electric power obtained using weak radio waves is provided.

Abstract: A voltage regulator includes an output node, a control circuit, and a power stage. The control circuit is configured to receive a power state signal from a load circuit coupled to the output node, and output a control signal based on the power state signal. The power stage includes a plurality of phase circuits coupled to the output node and is configured to enable a phase circuit of the plurality of phase circuits responsive to the control signal.

Abstract: A DC-DC converter including a first power supply including a first converter outputting a first power voltage, a first sensor detecting a panel current from an output of the first converter; and a first output group including a plurality of inverting converters outputting a second power voltage based on the panel current; a second power supply including a second converter outputting the first power voltage, and a second output group including a plurality of inverting converters outputting the second power voltage based on the panel current; and a first phase controller controlling operations of the inverting converters included in each of the first and second output groups based on the detected panel current. The second power supply operates when the panel current exceeds a predetermined enable value.

Abstract: Disclosed herein is a semiconductor device configured by packaging a semiconductor chip, including at least one terminal. The semiconductor chip includes a pad connected to the terminal, a voltage clamp unit, and a wiring disposed along an outer periphery of the semiconductor chip and between the voltage clamp unit and the pad. In a case in which the wiring has no broken wire portion, a terminal voltage generated at the terminal is clamped to a clamp voltage by the voltage clamp unit, and in a case in which the wiring has a broken wire portion, the terminal voltage reaches a predetermined voltage higher than the clamp voltage or a predetermined voltage lower than the clamp voltage.

Abstract: The subject application provides a zero-voltage switching flyback converter comprising: a transformer having a primary winding and a secondary winding; a primary switch and a secondary switch for conducting the currents flowing in the primary winding and secondary winding respectively. A timing control method for operating the flyback converter are provided to accomplish zero-voltage switch by turning on the secondary switch twice within one switching power cycle.

Abstract: A dual active bridge includes a first converter arranged on a primary side of the dual active bridge, a second converter arranged on a secondary side of the dual active bridge, a high frequency transformer that has two windings and that operatively connects the first converter to the second converter, and a plurality of inductors, which are arranged along the legs on one of the two windings of the high frequency transformer, and which are split between the legs of that winding. In one embodiment, the plurality of inductors are split between the legs of the winding disposed on the secondary side of the dual active bridge. The plurality of inductors may consist of two inductors, of which a first one is arranged of the first leg of the winding and a second one is arranged on the second leg of the winding.

Abstract: An isolated switched-mode power converter converts power from an input source into power for an output load. A digital controller senses a secondary-side voltage, such as a rectified voltage, of the power converter. The secondary-side voltage is divided down using a high-impedance voltage divider. The resultant divided-down voltage is provided to a voltage sensor within the digital controller. The voltage sensor level shifts the provided voltage, and buffers the resulting level-shifted voltage. The buffered, level-shifted voltage is provided to a tracking analog-to-digital converter (ADC) for digitization. The buffered signal provided to the tracking ADC has a high current capability, such that the voltage input to the tracking ADC may quickly converge before the tracking ADC outputs a digital value for the sensed secondary-side voltage.

Abstract: A primary controller configured for use in a power converter comprising a control circuit configured to determine a mode of operation of the power converter in response to a drive signal of a power switch. The control circuit further configured to generate a control signal in response to a signal representative of the mode of operation of the power converter, wherein the control signal represents a delay time to enable a turn on of the power switch after a turn off of a clamp switch. The control circuit further configured to generate a clamp drive signal to control the clamp switch. The primary controller further comprises a drive circuit configured to generate a drive signal to enable the power switch to transfer energy from an input of the power converter to an output of the power converter.

Abstract: An Active Clamp Flyback (ACF) converter includes a transformer module, a clamping module, and a controller. The controller is configured to: after the transformer module starts secondary side discharging, control the clamping module to start receiving leakage inductance power from the transformer module; and after controlling the clamping module to stop receiving the leakage inductance power from the transformer module, control the clamping module to release the leakage inductance power to the transformer module. The leakage inductance power released by the clamping module to the transformer module is used by the transformer module to restore a soft switching state based on the leakage inductance power. In a process of transferring the leakage inductance power to a clamping capacitor, the clamping module is in an enabled state. This reduces a loss caused by the clamping module to the leakage inductance power, and helps reduce overall loss caused by the ACF converter.

Abstract: In an embodiment, an off-grid phase splitter includes: a first input port and a second input port that are separately connected to a power supply; a first output port and a second output port that provide a second voltage, and the second output port and a third output port provide a third voltage; a first capacitor connected between the first output port and the second output port; a second capacitor connected between the second output port and the third output port; a first switch circuit and a second switch circuit connected in series to form a first node between the first input port and the second input port, where the first switch circuit and the second switch circuit are unidirectionally switched on in opposite directions,; and an inductor connected between the first node and the second output port.

Abstract: A three-phase converter and a control method thereof are provided. The three-phase converter includes an AC terminal, three filter circuits, three bridge arm circuits, a capacitor module and a DC terminal connected in sequence and a controller. The midpoints of the filter circuits are connected to the midpoint of the capacitor module. The controller controls each bridge arm circuit to work in the first and second modes at different time in one line voltage cycle of the AC source. In the first mode, the bridge arm circuit works in a clamping state. In the second mode, the bridge arm circuit selectively works in a DCM mode or a TCM mode. A switching frequency is limited to be lower than a preset frequency. When the three-phase converter works with over 80% of a rated load, a time length of working in the second mode is ?˜? of the line voltage cycle.

Abstract: A multi-level inverter having one or more banks, each bank containing a plurality of low voltage MOSFET transistors. A processor configured to switch the plurality of low voltage MOSFET transistors in each bank to switch at multiple times during each cycle.

Abstract: The present disclosure relates to a submodule topology circuit for a modular multilevel converter and a method for controlling same. The submodule topology comprises an inlet port and an outlet port, at least two half-bridge submodules, a plurality of first switching devices, a plurality of thyristors and a plurality of diodes, wherein the at least two half-bridges are connected in series and are provided between the inlet port and the outlet port, and each of the half-bridge submodules is provided with an input port, a first output port and a second output port.

Abstract: A power conversion device that performs power conversion between a DC circuit and an AC circuit includes a power conversion circuit including a plurality of sub-modules, a failure detection device that detects an internal failure of the power conversion circuit, and a control device that generates an operation command controlling operation of each of the plurality of sub-modules. The control device acquires a voltage value of a capacitor included in each sub-module, calculates a deviation between a variance value indicating a variation in the voltage value of the capacitor included in the sub-module in a reference period and a reference variance value in the sub-module for each of a plurality of sub-modules, determines a failure section of an internal failure based on the deviation in each sub-module when the internal failure is detected, and outputs an operation command based on a determination result to each sub-module.

Abstract: A power supply includes an inverter configured to direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load; and a controller configured to adjust disposition of a powering period, in which the AC power is output, and a freewheeling period, in which the AC power is not output, to adjust a power amount of the power supplied to the load through the impedance matching circuit by the inverter.