Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Direct Torque Control of Brushless DC Motor

브러시리스 DC 전동기의 직접 토오크 제어

  • Kang, Seog-Joo (Department of Electrical Engineering, Seoul National University) ;
  • Sul, Seung-Ki (Department of Electrical Engineering, Seoul National University)
  • 강석주 (서울대학교 공과대학 전기공학과) ;
  • 설승기 (서울대학교 공과대학 전기공학과)
  • Published : 1994.07.21
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Abstract

In this paper two methods of torque control for brushless DC motor with non-ideal trapezoidal back EMF are presented. One is the method of modulating the reference current so as to give a constant torque since the torque is given by the back EMF and the. phase currents. And the current control loop includes the feedforward control of back EMF and of the neutral voltage between the neutral points of the inverter and of the machine. The other is a direct voltage calculation algorithm for a given reference torque. In the two methods, the time delay due to the calculation is compensated by one sampling current prediction. The simulation results are presented to verify the proposed methods.

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