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Absolute position sensor for field-oriented control of an induction motor

  • US 8,390,240 B2
  • Filed: 06/11/2008
  • Issued: 03/05/2013
  • Est. Priority Date: 08/06/2007
  • Status: Active Grant
First Claim
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1. An automotive drive system comprising:

  • an induction motor having a rotor;

    an absolute position sensor coupled to the induction motor, wherein the absolute position sensor is configured to sense an absolute angular position of the rotor; and

    a controller coupled to the absolute position sensor to add a slip angle to a relative angular position of the rotor to produce a transformation angle, wherein the relative angular position is determined based on the absolute angular position.

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