A Commutation Torque Minimization Method for Brushless DC Motors with Trapezoidal Elecromotive Force

  • Kim, Chang-Gyun (Department of Electrical Engineering Korea Advanced Institute of Science and Technology) ;
  • Lee, Joong-Hui (Department of Electrical Engineering Korea Advanced Institute of Science and Technology) ;
  • Youn, Myung-Joong (Department of Electrical Engineering Korea Advanced Institute of Science and Technology)
  • 발행 : 1998.10.01

초록

In this paper, a commutation torque minimization method using parameter observer for a brushless DC motor fed by a voltage source inverter is described. In order to investigate the nature of the commutation torque ripple in trapezoidal brushless DC motor, a new model of the motor is proposed. The optimal drive voltage to minimize the ripple torque is represented as a function of the motor parameters. Therefore, the important parameter is estimated by least-square algorithm.

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