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Motor drive device that combined charge controller

  • US 20070024219A1
  • Filed: 07/27/2006
  • Published: 02/01/2007
  • Est. Priority Date: 07/27/2005
  • Status: Active Grant
First Claim
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1. A motor drive device equipped with an AC motor, an inverter, a rechargeable battery, a charge power supply, and an inverter controller and capable of doubling as a device to control charging of the rechargeable battery, wherein the inverter controller of the motor drive device comprises a connection judging section for judging whether the charge power supply is connected, and a mode switch controller for switching between a Motor Drive mode which converts a DC voltage of the rechargeable battery into an AC voltage by the inverter and supplies the AC voltage to the AC motor and a Battery Charge mode which supplies the DC voltage from the rechargeable battery to the inverter through a winding of the AC motor and drives semiconductor switching devices to charge the rechargeable battery;

  • the connection judging section inputs a voltage value detected on the terminals connected to the charge power supply, compares the detected voltage value by a predetermined voltage value, and outputs whether the charge power supply is connected; and

    the mode switch controller inputs the output from the connection judging section and switches between the Motor Drive mode and the Battery Charge mode after a predetermined mode transition period.

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