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Washing machine motor drive device

  • US 20030020431A1
  • Filed: 07/02/2002
  • Published: 01/30/2003
  • Est. Priority Date: 07/19/2001
  • Status: Active Grant
First Claim
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1. A washing machine motor drive device comprising an alternating current source, a rectifier circuit connected to said alternating current source, an inverter circuit for converting DC power of said rectifier circuit into AC power, a motor driven by said inverter circuit for driving an agitator or a washing/spinning tub, rotor position detector for detecting rotor position of said motor, current detector for detecting current of said motor, and control device for controlling said inverter circuit;

  • wherein said control device resolves said motor current into a current component that corresponds to magnetic flux and a current component that corresponds to torque, and controls said current component corresponding to magnetic flux and said current component corresponding to torque independently in accordance with the control stage of said motor.

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