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Phase current detection method, inverter control method, motor control method and apparatus for carrying out these methods

  • US 20070114966A1
  • Filed: 12/22/2006
  • Published: 05/24/2007
  • Est. Priority Date: 09/29/2001
  • Status: Active Grant
First Claim
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1. A phase current detection method for driving a motor by supplying outputs from a PWM inverter to the motor, comprising:

  • detecting a DC link current and a vector pattern;

    determining whether a voltage vector length exceeds a predetermined value;

    adjusting the voltage vector by varying a pulse application interval based upon the determining.

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