A Method for Getting Optimum Commutation Advance Angle in Brushless DC Motor

  • Li Hong
  • Wang Chongwu
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 129)


Brushless DC motor-BLDCM self-synchronization relies on rotor position sensors. Because of the inverter diodes freewheeling conduction and the motor’s inductance, the current of phase lags its back EMF, which results in the electromagnetic torque ripple. This paper analyzes the reason of the lagging and derives the relation between lag angle and the constant plateau value of phase current and proposes the dynamic advance angle tracking method based on minimizing the constant plateau value of phase current. Simulation results show that the method can track the optimum commutation advance angle in BLDCM.


BLDCM constant plateau value of phase current optimum commutation advance angle 


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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Northwestern Polytechnical UniversityXi’anChina

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