Control systems and methods for permanent magnet rotating machines

  • US 7,208,895 B2
  • Filed: 12/02/2005
  • Issued: 04/24/2007
  • Est. Priority Date: 06/24/2005
  • Status: Active Grant
First Claim
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1. A method of controlling a permanent magnet rotating machine, the machine including a stator and a rotor situated to rotate relative to the stator, the stator having a plurality of energizable phase windings situated therein, the method comprising:

  • receiving a rotor torque demand; and

    calculating a scaled torque demand from the received torque demand as a function of a speed of the machine to obtain a substantially constant rotor torque over a range of rotor speeds.

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