Phase current detection method, inverter control method, motor control method, and apparatus used in these methods

Phase current detection method, inverter control method, motor control method, and apparatus used in these methods

  • CN 1,473,391 A
  • Filed: 09/27/2002
  • Published: 02/04/2004
  • Est. Priority Date: 09/29/2001
  • Status: Active Application
First Claim
Patent Images

1. phase current detection method, output from PWM inverter (3) is being offered in the motor drive of motor (4) and drive motor (4), when detecting the phase current of motor (4) with additional vector graphics, minimum pulse width is limited according to the DC link electric current;

  • It is characterized in that,Respond to required duty ratio is less, apply generating positive and negative voltage, to applying voltage adjustment.

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