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Power factor control for floating frame controller for sensorless control of synchronous machines

  • US 20070040524A1
  • Filed: 08/17/2005
  • Published: 02/22/2007
  • Est. Priority Date: 08/17/2005
  • Status: Active Grant
First Claim
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1. A method for actively controlling and changing a power factor during operation of a synchronous machine, the method comprising the steps of:

  • generating a floating synchronous reference frame;

    providing an estimated angle of a phase current Park vector; and

    shifting said floating synchronous reference frame from the estimated angle of the phase current Park vector by an angle beta (β

    ) to provide coordinate transformation for a controller to drive a synchronous machine.

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