Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Robust Sensorless Speed Controller Design for SFO System of Induction Motor

유도전동기 고정자자속 기준제어시스템을 위한 강인한 센서리스 속도제어기 설계

  • Kim Dae-Il (Dept. of Electrical Engineering, Hanyang University) ;
  • Shin Myoung-Ho (Dept. of Electrical Engineering, Hanyang University) ;
  • Hyun Dong-Seok (Dept. of Electrical Engineering, Hanyang University)
  • 김대일 (한양대학교 전기공학과) ;
  • 신명호 (한양대학교 전기공학과) ;
  • 현동석 (한양대학교 전기공학과)
  • Published : 2002.07.01
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Abstract

In a conventional speed sensorless Stator Flux Oriented(SFO) induction machine drive system, the estimated speed is delayed in transients by the use of a low pass filter(LPF). To prevent extreme overshoot caused by this delay, PI controller gains should be small, which consequently is greatly affected by disturbance torque. In this paper, by taking advantage of disturbance torque observer and feedforward control, robust speed controller is designed for speed sensorless SFO system. The proposed method is verified by the simulation results.

Keywords