Alternating current motor drive circuit and electric vehicle drive circuit
AssigneesNational University Corporation Nagaoka University of Technology, Fuji Electric Co., Ltd.
InventorsJun-ichi Itoh, Michio Iwahori, Masakazu Gekinozu
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Abstract
A current source rectifier is provided at an output of an alternating current generator, an alternating current motor is connected to an output of the rectifier via a voltage source inverter, furthermore, two arms having switching elements connected in inverse parallel to diodes are connected to the output of the rectifier, and one terminal of a direct current power source capable of a power supply and absorption is connected to a midpoint between the arms, while the other terminal thereof is connected to a neutral point of motor coils or generator coils, thereby eliminating a need for a large volumetric reactor in a direct current chopper, achieving a downsizing of the circuit.
Claims6
An apparatus comprising:
- an alternating current generator;
- a current source rectifier coupled to the alternating current generator;
- an alternating current motor is connected to an output of the current source rectifier via a voltage source inverter, two arms having switching elements connected in inverse parallel to diodes are connected in series to the output of the rectifier,
- a direct current power source capable of a power supply and absorption, wherein one terminal of the direct current power source is connected to a midpoint between the two arms, while a second terminal is connected to either a neutral point of coils of the alternating current motor or to a neutral point of coils of the alternating current generator.
Dependencies are inferred from the claim text.