Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2009-01-12
2011-10-18
Benson, Walter (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S800000
Reexamination Certificate
active
08040101
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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Kato, Koji, et al.,“A Control Method of AC and DC Power Supply Direct Interface Converters”, Institute of Electrical Engineers of Japan, Apr. 2007, pp. 51-56. Cited in specification.
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Extended European Search Report issued in corresponding EP Patent Application No. 09150122.1-2207 dated Apr. 17, 2009.
Gekinozu Masakazu
Itoh Jun-ichi
Iwahori Michio
Benson Walter
Carrasquillo Jorge
Fuji Electric & Co., Ltd.
National University Corporation Nagaoka University of Technology
Rossi Kimms & McDowell LLP
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