Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2011-08-02
2011-08-02
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S433000, C318S434000, C318S802000, C318S803000, C361S063000, C361S065000, C361S093100, C324S509000, C324S510000, C324S511000
Reexamination Certificate
active
07990093
ABSTRACT:
A control apparatus for a multiphase AC electric motor having an inverter includes a current control including an abnormal-state current controller; an abnormal-state detector that detects an abnormal state of any of a wire of an electric motor, a wire of an inverter, and a wire connecting the electric motor to the inverter as an abnormal phase; and an abnormal phase disconnect. The abnormal phase disconnect disconnects one or more of phases detected to be in an abnormal-state and the abnormal-state current controller generates an abnormal state voltage command in accordance with detection of an abnormal state, and uses phases other than the disconnected phases of the inverter to control individual currents of the phases, with the abnormal-state voltage command used as a multiphase voltage command.
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Fujimoto Chiaki
Inoue Noriyuki
Kezobo Isao
Kifuku Takayuki
Kimata Masahiro
Glass Erick
Leydig , Voit & Mayer, Ltd.
Mitsubishi Electric Corporation
Ro Bentsu
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