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Apparatus and method for controlling permanent magnet electric machines

  • US 20020171387A1
  • Filed: 04/09/2001
  • Published: 11/21/2002
  • Est. Priority Date: 04/09/2001
  • Status: Active Grant
First Claim
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1. A control for use with a permanent magnet machine, comprising:

  • an algorithm determining an open-loop magnetizing reference current;

    a feedback path generating a feedback term based on the rotor speed of the permanent magnet machine and a torque current error; and

    a subtractor for subtracting the feedback term from the open-loop magnetizing reference current to generate a total magnetizing reference current.

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