Abstract: A power conversion system includes: power conversion circuitry including a plurality of submodules connected in series to each other; a host device to control each submodule included in the power conversion circuitry; a terminal device to display internal information about each submodule; and at least one repeating device to relay communication between the host device and each submodule and communication between the terminal device and each submodule. The repeating device receives, from one or more submodules communicating with the repeating device, internal information about the submodules, transmits, to the host device with a first cycle period, a first communication frame including aggregate information that is an aggregate of the received internal information, and transmits, to the terminal device with a second cycle period longer than the first cycle period, a second communication frame including internal information selected from the received internal information.

Abstract: This application discloses a power electronic transformer wherein each phase includes a plurality of power conversion modules. Each power conversion module includes a rectifier AC/DC circuit, a direct current bus capacitor, and a direct current-direct current DC/DC circuit. In each power conversion module, an output end of the AC/DC circuit is connected to an input end of the DC/DC circuit; the direct current bus capacitor is connected in parallel to the output end of the AC/DC circuit; and input ends of all the AC/DC circuits are connected in series, and output ends of all the DC/DC circuits are connected in parallel. The power electronic transformer includes a relatively small quantity of power conversion modules, thereby reducing occupied space and costs.

Abstract: A dual-input power supply has two power paths that connect a server to electrical Each power path has a first stage that comprises a power-factor correction circuit. The power paths share a common second stage that comprises a dc/dc converter. The first stages of the power paths collectively defining a pair of first stages that is disposed either within a package that is off the motherboard or without a package and on the motherboard. Similarly, the second stage is disposed either within a package that is off the motherboard or without a package and on the motherboard.

Abstract: In the field of high voltage direct current (HVDC) power transmission networks there is a need for an improved sensor failure detector. A sensor failure detector, for use in HVDC power transmission networks, includes an intelligent electronic device. The intelligent electronic device has a first input to receive in-use a number of first sample values from a first sensor measuring a given operational characteristic, and a second input to receive in-use a number of second sample values from a second sensor measuring the same given operational characteristic. The intelligent electronic device also includes a comparator module that is programmed to compare the first and second sample values with one another, and to establish a sensor failure when the first and second sample values differ from one another by more than a primary threshold for a predetermined first number of samples.

Abstract: A multiphase current-sharing configuration may include at least two power supplies providing respective output-currents in the current-sharing configuration. One or more of the power supplies may itself be a multiphase power supply. A first power supply of the current-sharing configuration may detect a phase difference between an external control signal provided to the first power supply to control the output voltage of the first power supply, and an internal control signal provided by a VCO of the first power supply. The phase difference may be provided to an integrator to cause the internal control signal to track the external control signal when the external control signal is available, and maintain a present operating frequency of the internal control signal in case the external control signal is lost, in which case the internal control signal may be used to uninterruptedly control the output voltage of the first power supply.

Abstract: Disclosed embodiments may include a power converter system with fault handling. Embodiments may include first and second power converters each including an output terminal and a control terminal, the first and second power converters to regulate voltage or current at their respective output terminals based on a voltage at their respective control terminals, the output terminals coupled to each other, and the control terminals coupled to each other; wherein the first power converter comprises: a circuit to detect a fault condition associated with the first power converter and to generate a first fault signal at the control terminal of the first power converter after the detecting the fault condition associated with the first power converter; wherein the second power converter comprises: a circuit to change an operating mode of the second power converter after generating the first fault signal at the control terminal of the first power converter.

Abstract: An electric drive system for an electric vehicle is provided. The electric drive system includes a first electric drive, a second electric drive, and a switchable battery including at least two battery packs that are selectively arranged in one of a series configuration and a parallel configuration. The electric drive system also includes a first half-bridge buck converter connecting the first electric drive to a first battery back of the at least two battery packs of the switchable battery and a second half-bridge buck converter connecting the second electric drive to a second battery back of the at least two battery packs of the switchable battery. The electric drive system further includes a controller configured to control the configuration of the switchable battery, an operation of the first half-bridge buck converter, and the second half-bridge buck converter.

Abstract: Described herein is a multi-level power convertor and a method for a multi-level power convertor. The multi-level power convertor includes a DC port; an AC port; a first power converting unit, a second power converting unit, a coupling inductor, and an inductive filtering unit. The first power converting unit is coupled to the DC port and includes a first AC terminal adapted to provide a first plurality of voltage levels. The second power converting unit is coupled to the DC port and includes a second AC terminal adapted to provide a second plurality of voltage levels, where the second plurality of voltage levels are phase-shifted by 90 degrees with respect to the first plurality of voltage levels. The coupling inductor includes first and second windings with a same number of turns. The inductive filtering unit is arranged between the AC port and ends of the first and second windings.

Abstract: A fan fault detection device includes: a plurality of sub-modules; and a master module to configured to determine faults of a plurality of fans, wherein each of the plurality of sub-modules includes: a first input terminal for receiving a detection signal indicating whether a corresponding fan is defective; a second input terminal; an output terminal; a switching circuit connected between the output terminal and a first power source for supplying a voltage signal corresponding to a state signal and, the switching circuit configured to switch an output of the state signal through the output terminal according to the detection signal; and a first signal transmission circuit connected between the first input terminal and the switching circuit, the first signal transmission circuit configured to transmit the detection signal to the switching circuit according to a signal received by the second input terminal.

Abstract: An uninterruptible power supply device includes a rectifier module coupled to an electrical power grid, an inverter module coupled to the rectifier module, and a battery converter module. The rectifier module can process a higher amount of electric power as the designed electrical power provided by the inverter module to enable the uninterruptible power supply device to provide stabilization support to the electrical power grid, wherein the rectifier module comprises at least two rectifier submodules, each dimensioned to process an amount of electrical power according to a capability of the inverter module to process power. The rectifier module is configured to electrically couple the rectifier submodules selectable to process a higher amount of electric power as the inverter module to provide stabilization support to the electrical power grid.

Abstract: A multi-converter power supply system includes a plurality of cell converters, a common node to which an individual output terminal of each of the plurality of cell converters is connected, a current waveform signal generation circuit that generates a current waveform signal corresponding to a current waveform flowing through an individual inductor, a current average signal generation circuit that generates a current average signal by averaging temporal changes that the current waveform signal has in a switching period of a switching control circuit, and an instrumentation amplifier that receives input of a current common signal obtained from the common node and the current average signal and that generates an individual current feedback signal to be fed back to the switching control circuit.

Abstract: The invention relates to a control device (100) for a DC-DC converter (110) having multiple parallel-connected DC-DC converter modules (120_1, . . . , 120_n). The control device measures individual target current values for the DC-DC converter modules so that these are operated with a common degree of utilisation.

Abstract: A fault-responsive power system and method using active line current balancing. First and second supply-side currents flowing from at least one power supply and into first and second conductor pairs, respectively, are measured. First and second remote-side currents flowing from the first and second conductor pairs and into first and second power converters, respectively, are measured. The outputs of the first and second power converters are electrically coupled together in parallel and deliver power to a load. The first and second remote-side currents are balanced in response to measurements of the first and second remote-side currents while power is being delivered. When a difference between the first and second supply-side currents at least meets a magnitude threshold, the first and second supply-side currents are reduced until the difference is less than the magnitude threshold.

Abstract: A three-phase power supply circuit comprises three LLC resonant voltage converters and a transformer assembly comprising three primary coil assemblies and three secondary coil assemblies. Each primary coil assembly comprises a first primary winding having a first node electrically coupled with a respective first voltage output of the pair of voltage inputs of a respective LLC resonant voltage converter of the three LLC resonant voltage converters and a second node. Each primary coil assembly also comprises a second primary winding comprising a first node and a second node electrically coupled with a respective second voltage output of the pair of voltage inputs of the respective LLC resonant voltage converter. The second nodes of the first primary windings are electrically coupled together, and the first nodes of the second primary windings are electrically coupled together.

Abstract: Systems and methods of operating for a smart power router for boosting and protection are provided. Aspects include a power router comprising a plurality of terminals, a first DC power supply coupled to the first terminal, a second DC power supply coupled to the second terminal, a first power converter, an interface bi-directional switch coupled between the first terminal and the second terminal, a first bi-directional switch coupled between the first terminal and the third terminal, the first bi-directional switch comprising a first transistor and a second transistor, a first RL circuit, a controller configured to operate the power router in a plurality of modes comprising a first voltage boosting mode, wherein operating the power router in the first voltage boosting mode comprises operating the interface bi-directional switch in an on state, operating the first transistor in an off state, and operating the second transistor in a switching state.

Abstract: A power converter contains at least one phase module which has a plurality of modules which are electrically connected in series. Each module has a first electrical module connection, a second electrical module connection, a first electronic switching element, a second electronic switching element and an electrical energy storage device. The phase module is assigned at least one controllable voltage source which is suitable for generating a compensation voltage in response to a corresponding actuation, the compensation voltage has a time profile such that it reduces an error voltage generated by the switching of the first electronic switching elements and the second electronic switching elements of the module.

Abstract: Disclosed herein is a method for controlling an electrical converter system that includes: determining a nominal pulse pattern (tp,i*, ?up,i*) and a reference trajectory (x*) of at least one electrical quantity of the electrical converter system over a horizon of future sampling instants, the nominal pulse pattern (tp,i*, ?up,i*) comprises switching transitions (?up,i*) between output voltages of an electrical converter of the electrical converter system and the reference trajectory (x*) indicates a desired future development of an electrical quantity of the converter system; determining a small-signal pulse pattern (?abc(t, ?p,i)) by minimizing a cost function; determining a modified pulse pattern (topt,p,i, ?up,i) by moving the switching transitions of the nominal pulse pattern (tp,i*, ?up,i*) to generate modified switching transitions; and applying at least the next switching transition of the modified pulse pattern (topt,p,i, ?up,i) to the electrical converter system.

Abstract: A main circuit power supply device includes: a plurality of voltage-division power storage elements connected in series; voltage adjustment circuits for adjusting each of voltages of the plurality of voltage-division power storage elements through mutual transfer of power between the plurality of voltage-division power storage elements; and at least one DC/DC converter which is connected to at least one of the voltage-division power storage elements and supplies a control power source to a main circuit control circuitry to control a main circuit.

Abstract: A method for calculating the steady-state fault current of a modular multilevel converter (MMC) comprises calculating the dc-side critical resistance values RA/B, RB/C and RC/D of the MMC based on the bridge arm inductance coefficient k and the ac-side reactance Xac of the MMC; Then, determining the operating modes of the MMC based on RA/B, RB/C and RC/D, and calculating the steady-state dc fault current and the conduction overlap angle respectively under various operating modes without considering the ac-side resistance based on the parameters k, Us, Rdc and the dc-side critical resistance values RA/B, RB/C and RC/D; After that the steady-state AC fault current amplitude and phase angle for each operating mode without considering the AC side resistance are calculated based on the DC current and conduction overlap angle for each operating mode, respectively. Finally, the steady-state AC fault current amplitude and phase angle are calculated for various operating modes considering the AC side resistance.

Abstract: A method for operating an inverter includes applying, via a switching unit of the inverter, an AC voltage to a phase line in which a filter inductor is arranged, determining a coil current (iL) of the filter inductor and determining a coil voltage (uL) of the filter inductor, determining a first value (L(Ix)) of the filter inductor for a first value of the coil current (Ix), determining an inductance profile of the filter inductor with respect to the coil current, using the determined first value of the filter inductance and optionally using the at least one determined further value of the filter inductance, and controlling the switching unit of the inverter, via a control unit, to generate an alternating current in the phase line. At least one parameter of the control process is continuously adapted to the momentary coil current according to the determined current-dependent inductance profile.

Abstract: A switching power source device includes a plurality of power source circuits including a first power source circuit corresponding to a first phase of an external power source, and a second power source circuit corresponding to a second phase of the external power source that is different from the first phase; a first switching circuit capable of switching between a plurality of connection modes including a first mode of connecting the second power source circuit to the first phase in parallel with the first power source circuit, and a second mode of connecting the second power source circuit to the second phase; a memory; and a hardware processor coupled to the memory, the hardware processor being configured to open and close a switching element included in the first power source circuit and a switching element included in the second power source circuit, in different phases in the first mode.

Abstract: The present disclosure relates to a voltage source converter (VSC) (300) comprising: a first MOSFET switching element (302) including a first body diode (306); a second MOSFET switching element (304) including a second body diode (308), the second MOSFET switching element (304) being connected in series with the first MOSFET switching element (302); a protection device (318) connected in parallel with the second MOSFET switching element (304); and a controller (312), wherein the controller (312) is configured, on detection of an overcurrent event, to: switch off the first MOSFET switching element (302); and switch off the second MOSFET switching element (304), thereby forcing current flowing in the VSC (300) following the overcurrent event to flow through the second body diode (308) rather than through conducting channels of the first and second MOSFET switching elements (302, 304).

Abstract: A system for aircraft power management and distribution, including a sensor suite configured to measure battery pack data. The system includes a battery pack with a plurality of batteries and a battery monitoring component. This battery monitoring component is configured to measure battery pack data. The system also has electric power converters, each connected to a battery of the plurality of batteries. The system also includes a controller configured to control each electric power converter; receive an estimated charge from each battery; select and enable electric power converters based on the estimated charge; compare the total output of the enabled electric power converters against an optimal operating region; and adjust the number of the one or more enabled electric power converters accordingly.

Abstract: In an embodiment, a control circuit includes: an output terminal configured to be coupled to a control terminal of a transistor that is coupled to an inductor; a logic circuit configured to control the transistor using a first signal; a zero crossing detection circuit configured to generate a freewheeling signal indicative of a demagnetization of the inductor; a comparator having first and second inputs configured to receive a sense voltage indicative of a current flowing through the transistor and a reference voltage, respectively, and an output configured to cause the logic circuit to deassert the first signal; and a reference generator configured to generate the reference voltage and including: a current generator, a capacitor and a resistor coupled to the output of the reference generator, and a switch coupled in series with the resistor and configured to be controlled based on the first signal and the freewheeling signal.

Abstract: Example implementations include a method of reducing current overshoot in a power regulator device, by detecting a change in an input current of an inductive charger device in response to a change in load on the inductive charger device, modifying an operating state of the inductive charger device in accordance with a first input current limit parameter based on a total input current limit parameter and a current division parameter, in response to the detecting the change in the input current, operating the inductive charger device in accordance with the first input current limit during a current limit period subsequent to the detecting the change in the input current, modifying the operating state of the inductive charger device in accordance with a second input current limit parameter based on the total input current limit parameter and the current division parameter, subsequent to the current limit period, and operating the inductive charger device in accordance with the second input current limit subseque

Abstract: A protection circuit for a power converter with cascaded bipolar and/or unipolar semiconductors is provided. The protection circuit includes at least one comparator circuit which is adapted to monitor a voltage characteristic on a collector-emitter path of at least one semiconductor which is arranged in a polarity selection stage of the power converter and/or to monitor a voltage characteristic on at least one capacitor, which is arranged in the power converter. The at least one comparator circuit is further adapted to output an electrical signal, representing the voltage characteristic of the semiconductor and/or the at least one capacitor to at least one evaluation unit. The at least one evaluation unit is further adapted to evaluate the result from the at least one comparator circuit and to deactivate the semiconductors in case that the voltage characteristic of the semiconductors and/or the capacitors deviate from a predetermined threshold.

Abstract: Aspects of an efficient, wide voltage range, power converter system are described. In one example, a power converter system includes a first power converter, a second power converter, and a controller for the power converter. An input of the first power converter and an input of the second power converter are connected in series across an input voltage for the power converter system, and an output of the first power converter and an output of the second power converter are connected in parallel at an output of the power converter system. The controller is configured to regulate the second power converter and to determine whether or not to regulate the first power converter based on the input voltage for the power converter system and an output voltage of the power converter system, among other factors, for greater efficiency of the power converter system over wider input and output voltage ranges.

Abstract: This application discloses a power supply and a power system. A first power supply is configured to set an output voltage of the first power supply to a plurality of voltage values. A second power supply is configured to send a plurality of first parameters to the first power supply, where the first parameters are used to identify power efficiency of the second power supply. The first power supply is further configured to obtain a plurality of second parameters, which are used to identify power efficiency of the first power supply. The first power supply is further configured to determine, based on the plurality of first parameters and the plurality of second parameters, maximum power efficiency of the power system and a voltage value corresponding to the maximum power efficiency.

Abstract: A method for controlling a battery-powered power supply. The method includes generating a first output from a first power supply within the battery-powered power supply. The first output is coupled to an output bus. The method further includes monitoring a voltage of the output bus, and determining, using a controller of the battery-powered power supply, whether the voltage of the output bus is less than a first predetermined level. The method further includes deactivating the first power supply in response to determining that the voltage of the output bus is below the first predetermined level, and generating a second output from a second power supply within the battery-powered power supply. The second output is configured to be coupled to the output bus. The second power supply has a higher output rating than the first power supply.

Abstract: Current balancing for interleaved power converters. One example is a method of operating a power converter comprising: operating, at a switching frequency, a first power converter defining a first resonant primary, the first power converter provides a first portion of a total power provided to a load; operating, at the switching frequency, a second power converter defining a second resonant primary, the second power converter provides a second portion of the total power provided to the load; and limiting a resonant voltage of the first resonant primary by controlling energy in the first resonant primary, the controlling during periods of time when the first portion is larger than the second portion.

Abstract: A system for aircraft power management and distribution, including a sensor suite configured to measure battery pack data. The system includes a battery pack with a plurality of batteries and a battery monitoring component. This battery monitoring component is configured to measure battery pack data. The system also has electric power converters, each connected to a battery of the plurality of batteries. The system also includes a controller configured to control each electric power converter; receive an estimated charge from each battery; select and enable electric power converters based on the estimated charge; compare the total output of the enabled electric power converters against an optimal operating region; and adjust the number of the one or more enabled electric power converters accordingly.

Abstract: Various embodiments relate to a distributed power system, including: a primary power management integrated circuit (PMIC) configured to receive a source voltage and connected to a primary communication bus, wherein the primary PMIC produces a secondary voltage on a voltage line, wherein the primary PMIC communicates with a microcontroller unit (MCU) via the primary communication bus; and a plurality of secondary PMICs connected to the primary PMIC via the voltage line, a secondary communication bus, and a fail line, wherein the plurality of secondary PMICs are configured to produce a pulsed signal on the fail line when a secondary PMIC fails, wherein the pulsed signal produced by each of the plurality of secondary PMICs have a unique pulse width that indicates to the primary PMIC the identity of the failed secondary PMIC.

Abstract: A power adaptor system may comprise a power source supplying input voltage according to a dynamic power rating to an operably connected host information handling system, a power source identification (PSID) module of the power adaptor receiving an adjustable setting voltage from the power source via a setting voltage port of the PSID module, and a controller of the PSID module executing code instructions to select the dynamic power rating for the power source based on a measurement of the adjustable setting voltage indicating an operating condition of the power adaptor or based on an indication of an operating condition the operably connected host information handling system, wherein the dynamic power rating is one of a plurality of dynamic power ratings in including an adjustable range of power levels at each dynamic power rating at which the power source is capable of operating.

Abstract: Modular power systems, smart battery modules, and monitoring and control systems are described herein. The modular power system comprises at least one mains converter connected between a mains supply and a DC bus, a monitoring and control system connected to the DC bus, and a plurality of smart battery modules configured to be removably connected in parallel to the DC bus. Each battery module comprises a decoupling unit configured to electrically disconnect, or connect the battery module to, or from, the DC bus. The monitoring and control system is configured to monitor supply of mains power to the mains converter, the voltage of the DC bus, the terminal voltage of each smart battery module, and the magnitude of the load is that is present on the DC bus. The monitoring and control system is configured to control the DC output voltage of the mains converter; and control the decoupling unit of each smart battery module to be in one of at least: a connected mode, and a disconnected mode.

Abstract: A modular power converter system includes a plurality of active power link modules (APLMs) coupled to each other, each APLM having a plurality of switching devices including first and second switching devices coupled to each other, and at least one first-type energy storage device (ESD) coupled in parallel with both of the first and second switching devices, the first-type ESD configured to induce a first direct current (DC) voltage. The system also includes a plurality of relays coupled to the first-type ESD, and a charge controller coupled to at least one APLM of the plurality of APLMs and coupled to at least one of an electrical power source and a discharge circuit. The charge controller is configured to alternately charge and discharge the first-type ESD in response to a plurality of switching states including switching states of the plurality of switching devices and the plurality of relays.

Abstract: A local control-unit operable as a master or a slave comprises: a memory indicative of whether the converter sub-unit is enabled or disabled; and an enable; a wake-up output; a communication link input and output interfaces configured to receive and to send master/slave information; and a further communication link input and output interfaces, configured to both enable current balancing and phase interleaving with other enabled converter sub-units; and being adapted and configured to: in response to the respective local output current being higher than a first threshold, send a wake-up request to the next converter sub-unit; and in response to (a) being a slave sub-unit; (b) the respective local output current being lower than a second threshold, and (c) receiving master/slave information indicative that the next enabled sub-unit is a master sub-unit, disabling itself. Methods of operating the same are also disclosed.

Abstract: The invention first relates to a charging device (1) adapted for being connected on the one hand to a battery of a first electric vehicle (14), and on the other hand to a battery of a second electric vehicle (12), for being supplied with direct input current by the battery of the first electric vehicle (14), and for supplying the battery of the second electric vehicle (12) with a direct output current. The invention also relates to a charging method using this charging device.

Abstract: An inverter that is a micro-photovoltaic inverter includes a DC-DC converter on an input side of the inverter. The DC-DC converter has three output voltage levels. The inverter also includes an inverter element having at least three input voltage levels. The inverter element is electrically connected to the DC-DC converter.

Abstract: Devices and method for selecting voltage sources. A voltage selection module may include an analog voltage input. The voltage selection module may also include a digital based voltage input. The voltage selection module further includes a control component coupled to the analog voltage input and the digital based voltage input, the control component configured to determine whether to use a first voltage received from the analog voltage input or a second voltage received from the digital based voltage input to generate an output voltage.

Abstract: According to one embodiment, there is provided a power converter including a totem-pole power factor correction circuit that can achieve reduction in recovery loss with a simple structure. A power converter according to an embodiment includes a totem-pole power factor correction circuit, a series connection of a first current detector and a second current detector, and a control circuit.

Abstract: A control method includes the following operations: combining multiple output voltages into a total output voltage; generating a first switching frequency based on a first voltage difference, and generating at least one offset frequency based on at least one second voltage difference; generating at least one second switching frequency according to the at least one offset frequency and the first switching frequency; and generating a first set of switching signals according to the first switching frequency, and generating at least one second set of switching signals according to the at least one second switching frequency to respectively control a switching element of the resonant converter circuits.

Abstract: Various embodiments include a modular multilevel converter comprising: two phase units in parallel each with an upper arm and a lower arm, each arm with cells in series, each cell with an energy storage element and switching the element in or out of the series of cells; a control unit for the switches; a middle converter arm in series between the upper and lower arm, with cells arranged in series; an upper node between the upper and middle arms and a lower node between the lower and middle arms; an upper bridging element arranged between said upper node and an AC terminal; and a lower bridging element arranged between said lower node and said AC terminal.

Abstract: The present disclosure provides a conversion system with a high voltage side and a low voltage side, including: a plurality of power units, each power unit including: a plurality of DC/DC converters, when in normal operation, one part of DC/DC converters being in a working state and other DC/DC converters being in a cold backup state; a plurality of bypass circuits connected in parallel to the corresponding DC/DC converters; a detection unit connected to each DC/DC converter, and detects the DC/DC converter; and a control unit coupled to the detection unit and each of the plurality of DC/DC converters; and a main control unit coupled with each control unit and configured to receive the preset signal of respective control unit and outputs a bypass signal and a release signal to the corresponding control unit according to the preset signal.

Abstract: A direct-current (DC) voltage conversion device includes a resonate driving device, at least two second transformers, at least two second transformers, at least two third transformers, and a rectifying device. The primary sides of the second transformers are connected in series via a first conductive wire and coupled to the resonate driving device via a second conductive wire. The primary sides of the second transformers are connected in series via a third conductive wire and coupled to the resonate driving device via a fourth conductive wire. The primary sides of the third transformers are connected in series via a fifth conductive wire and coupled to the resonate driving device via a sixth conductive wire. The rectifying device is coupled to the secondary sides of the transformers.

Abstract: A multiphase current-sharing configuration may include at least two power supplies providing respective output-currents in the current-sharing configuration. One or more of the power supplies may itself be a multiphase power supply. A first power supply of the current-sharing configuration may detect a phase difference between an external control signal provided to the first power supply to control the output voltage of the first power supply, and an internal control signal provided by a VCO of the first power supply. The phase difference may be provided to an integrator to cause the internal control signal to track the external control signal when the external control signal is available, and maintain a present operating frequency of the internal control signal in case the external control signal is lost, in which case the internal control signal may be used to uninterruptedly control the output voltage of the first power supply.

Abstract: A power conversion device is provided. The power conversion device includes a main transformer circuit, a power switch, an auxiliary transformer, a resonant circuit, and a switch circuit. When the power switch is turned on, the switch circuit is enabled according to energy stored in an output capacitor of the main transformer circuit, so that energy associated with a secondary side of a main transformer is coupled to the resonant circuit via the auxiliary transformer so the resonant circuit obtains coupling energy. When the power switch is turned off, the resonant circuit and a parasitic capacitor of the power switch form a resonant tank coupled to a grounding terminal of a power supply side based on the coupling energy.

Abstract: A storage-battery charging device for a motor vehicle is configured to be arranged in the motor vehicle. The storage-battery charging device includes a first stage with a power factor correction filter, and a second stage with an inverter. The first stage is electrically connected to the second stage through an intermediate node, the intermediate node being directly electrically connected to a feed-in connection point for direct voltage. The feed-in connection point is designed for direct electrical coupling to a high-voltage vehicle electrical system of the motor vehicle.

Abstract: A multi-port power converter including a housing comprising a plurality of ports structured to electrically interface to a plurality of loads, the plurality of loads having distinct electrical characteristics; a plurality of solid-state components configured to provide selected electrical power outputs and to accept selected electrical power inputs; a plurality of solid-state switches configured to provide selected connectivity between the plurality of solid-state components and the plurality of ports; and a controller, the controller comprising: a component bank configuration circuit structured to interpret a port electrical interface description comprising application requirements for a selected mobile electric application, the port electrical interface description comprising a description of at least a portion of the distinct electrical characteristics; and a component bank implementation circuit structured to provide solid switch states in response to the port electrical interface description, and wherein

Abstract: A switching power supply device includes a pair of input terminals, a pair of output terminals, N number (N: an integer of 2 or greater) of transformers, N number of inverter circuits, a rectifying and smoothing circuit, and a driver. The transformers include respective primary-side windings and respective secondary-side windings. The inverter circuits are disposed in parallel between the pair of input terminals and the primary-side windings and each include switching elements. The rectifying and smoothing circuit is disposed between the pair of output terminals and the secondary-side windings and includes a rectifying circuit and a smoothing circuit. The driver sets an input voltage to be supplied to the smoothing circuit at successive stage levels (N+1) by causing, through switching driving, the inverter circuits to apply a predetermined pulse voltage or a voltage at a predetermined voltage value to the respective primary-side windings.

Abstract: An apparatus includes a plurality of input nodes configured to receive a multiphase alternating current (AC) input signal. The apparatus further includes a plurality of inductors, a neutral terminal, a first plurality of output nodes, and a second plurality of output nodes. The plurality of inductors is coupled to the plurality of input nodes, and the neutral terminal is coupled to the plurality of inductors. The first plurality of output nodes is coupled to the plurality of inductors and is configured to output a first multiphase AC output signal. The second plurality of output nodes is coupled to the plurality of inductors and is configured to output a second multiphase AC output signal.