Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
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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Gekinozu Masakazu
Iwahori Michio
Dougherty Thomas
Fuji Electric Systems Co., Ltd.
Rabin & Berdo P.C.
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