AC motor driving circuit and electric vehicle driving circuit

Details AC motor driving circuit and electric vehicle driving circuit AC motor driving circuit and electric vehicle driving circuit

2009-05-12

2011-12-13

Dougherty, Thomas (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S800000

Reexamination Certificate

active

08076897

ABSTRACT:
In an AC motor driving circuit, a current source rectifier is provided on the output side of an AC generator and an AC motor is connected to the output side of the current source rectifier through a voltage source inverter. Along with this, one of terminals of each of a plurality of bidirectional switches is connected to its corresponding output terminal of the voltage source inverter, the other terminals of a plurality of the bidirectional switches are lumped together to be connected to one of terminals of a storage battery, and the other terminal of the storage battery is connected to one of DC input terminals of the voltage source inverter. This eliminates need for a large capacitor at a DC link and a reactor in a chopper which were previously necessary, by which the AC motor driving circuit is downsized.

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S. Katsuji et al., “Technical Trends of Direct AC/AC Convertes”, IEEJ Trans. IA, vol. 126, No. 9, 2006, pp. 1161-1170.

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