Alternating current motor drive circuit and electric vehicle drive circuit
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United States of America Patent
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Oct 18, 2011
Grant Date -
Aug 20, 2009
app pub date -
Jan 12, 2009
filing date -
Jan 11, 2008
priority date (Note) -
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status (Latency Note)
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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.
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