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DETERMINATION OF ROTOR FATIGUE IN AN ELECTRIC MACHINE ASSEMBLY

  • US 20170155307A1
  • Filed: 12/01/2015
  • Published: 06/01/2017
  • Est. Priority Date: 12/01/2015
  • Status: Active Grant
First Claim
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1. An electric machine assembly comprising:

  • an electric machine including a rotor;

    a controller operatively connected to the electric machine and configured to receive a torque command;

    wherein the rotor is configured to rotate at a rotor speed based at least partially on the torque command;

    wherein the controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a cumulative rotor fatigue (CF) based at least partially on the rotor speed;

    wherein the controller is operative to control at least one operating paramater of the electric machine based at least partially on the cumulative rotor fatigue (CF).

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