Control of brushless motor

Control of brushless motor

  • CN 104,427,921 B
  • Filed: 06/20/2013
  • Issued: 11/03/2020
  • Est. Priority Date: 07/03/2012
  • Status: Active Grant
First Claim
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1. A method of controlling a brushless motor, the method comprising:

  • sensing a temperature within a motor system including a brushless motor;

    defining a current limit using the sensed temperature, wherein a lower current limit is defined for a lower sensed temperature; and

    sequentially energizing and de-energizing a winding of the motor, the winding being de-energized in response to current in the winding exceeding a current limit,wherein the method comprises sequentially energizing and de-energizing the winding over one or more drive periods, and increasing the current limit at the end of each drive period.

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