Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A New Current Control Algorithm for Torque Ripple Reduction of BLDC Motors

BLDC 전동기의 토크리플 저감을 위한 새로운 전류제어 알고리즘에 대한 연구

  • Kim Tae-Sung (Dept. of Electrical Engineering, Hanyang University) ;
  • Ahn Sung-Chan (Dept. of Electrical Engineering, Hanyang University) ;
  • Hyun Dong-Seok (Dept. of Electrical Engineering, Hanyang University)
  • 김태성 (한양대학교 전기공학과) ;
  • 안성찬 (한양대학교 전기공학과) ;
  • 현동석 (한양대학교 전기공학과)
  • Published : 2001.07.01
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Abstract

The BLDCM (Brushless DC Motor) characterized by linear torque to current, and speed to voltage has low acoustic noise, and fast dynamic response. Moreover, it has high power density with high proportion of torque to inertia in spite of small size drive. But, it produce torque ripple due to the motor inductance components in stator windings and back-EMF, when armature current is commutated. Therefore, it is difficult to apply the BLDCM to a precision servo drive system. In this paper is proposed to a new current control algorithm with using fourier series coefficients can minimize torque ripple due to the phase current commutation of BLDCM. Simulation and Experimental results prove the effectiveness the proposed algorithm through comparison with the conventional used unipolar PWM method.

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