In a power conversion apparatus, a connection switch electrically connects between a neutral point of star-connected plural-phase windings and each of a negative terminal of a first battery and a positive terminal of a second battery while turned on, and cuts off an electrical connection between…
Disclosed embodiments may include a power converter having a first and a second terminal, a charge pump power conversion circuit, and a protection circuit. The first terminal may be to receive an input voltage. The second terminal may be to output an output voltage. The charge pump power conversion…
A bi-directional high voltage DC-DC converter capable of detecting and avoiding a bypass and an operating method thereof, by detecting whether a bypass has occurred and performing an operation for avoiding the bypass and/or an operation for coping with the bypass when the occurrence of the bypass…
The present disclosure discloses a sub-module hybrid MMC with low full-bridge ratio and a DC fault processing method thereof. The hybrid MMC prevents the energy at the AC side from entering a DC system by artificially creating three-phase interphase short circuit at the AC side of a converter in…
Enhanced battery pack controllers and control methods are disclosed. One illustrative battery pack controller includes: a monitor circuit that couples to a battery pack load terminal to detect when a voltage of the battery pack load terminal indicates a load condition; a fault detection circuit…
An adaptive electrical power distribution panel receives electrical power from at least an alternative power source other than a utility electric grid, and selectively outputs power to a plurality of branch circuits, appliances, or devices. An internal or remote controller monitors conditions. In…
A portable electric energy storage system and a power regulation method thereof are provided. The portable electric energy storage system includes a housing, and an inverter and an energy storage battery disposed in the housing, and further includes: a power detector configured to detect a present…
A charging voltage converter on a vehicle is equipped with an upstream circuit, which includes at least one working inductor. Furthermore, the converter has a switching unit, which is connected downstream of the upstream circuit. The working inductor connects a first input potential of an input of…
A DC to AC inverter for solar energy installations is configured to convert DC input power at a first voltage to a desired AC output power waveform. The inverter includes multilevel circuitry configured to define a plurality of different levels, wherein each level is defined by lower and upper…
The present disclosure discloses a sub-module hybrid MMC with low full-bridge ratio and a DC fault processing method thereof. The hybrid MMC prevents the energy at the AC side from entering a DC system by artificially creating three-phase interphase short circuit at the AC side of a converter in…
A method for a power system is disclosed. The method includes receiving signals, activating switches to pass a current from a power source to an apparatus. The method also includes deactivating switches and bypassing the power source. The power source may be a photovoltaic power source. The signals…
A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving a commanded state for one or more switching devices thereof. The method also includes receiving a gate-emitter voltage of one or more of the switching devices…
A photovoltaic system and a circulating current suppression method. The system includes a controller and at least two inverters. A direct current input terminal of each inverter is connected to a corresponding photovoltaic array. Alternating current output terminals of the at least two inverters…
A power converter between an AC side and DC of the power converter is disclosed. The AC side is connected to an AC supply grid and the DC side is connected to a DC grid. The power converter includes a bridge circuit connected to the AC side of the power converter via AC switches and connected to…
An adaptive electrical power distribution panel receives electrical power from at least an alternative power source other than a utility electric grid, and selectively outputs power to a plurality of branch circuits, appliances, or devices. An internal or remote controller monitors conditions. In…
A bypass circuit of an embodiment includes a switch that shorts-circuit between a first power conversion apparatus and a power storage apparatus. The switch is connected in parallel to a second power conversion apparatus. The first power conversion apparatus converts power generated from natural…
A power conversion system for electrically driven mobility device includes a first energy storage device and a second energy storage device having a voltage output lower than a voltage of the first energy storage device, a relay having one terminal connected to the first energy storage device, a DC…
A power supply system and a method for controlling the power supply system includes a direct current voltage conversion apparatus, an inverter, and a diode. The direct current voltage conversion apparatus includes a controller and a direct current voltage conversion circuit. The controller is…
A system includes a transformer having a primary winding and an auxiliary winding at a primary side of an AC-DC converter, the auxiliary winding reflecting an output voltage of a secondary winding of the transformer. A primary side controller includes an over-voltage protection (OVP) pin and an OVP…
A power supply device with improved current balancing mechanism includes a power supply module, and a current detecting module detecting the output current to generate a sample voltage. A compensation voltage is provided that is in superposition with the sample voltage to synthesizes a corrected…
A converter control arrangement (18) for regulating the output current of a dc source power converter (16) comprises a current regulator (20) for regulating the output current based on a comparison of an output current value (I out ) of the dc source power converter (16) with a desired target…