The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Improved Transition Method for Sensorless Operation of Interior Permanent Magnet Synchronous Motor Drives

매입형 영구자석 동기기 센서리스 구동부의 개선된 절환 기법

  • Han, Dong Yeob (Dept. of Space Survey Information Technology, Ajou University) ;
  • Yoon, Jae Seung (Dept. of Electrical and Computer Engineering, Ajou University) ;
  • Cho, Yongsoo (Dept. of Electrical and Computer Engineering, Ajou University) ;
  • Lee, Kyo-Beum (Dept. of Electrical and Computer Engineering, Ajou University)
  • Received : 2015.05.03
  • Accepted : 2016.03.07
  • Published : 2016.08.01
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Abstract

This paper proposes the improved transition scheme for a sensorless drive of an interior permanent magnet synchronous motor (IPMSM). In order to operate the IPMSM, the current controller can be used until 300 rpm for the initial operation. After that, the control method of IPMSM is changed to the speed controller for the sensorless control method. At that point, the rotor speed overshoot is generated due to the rapid change of the current reference for the speed controller. The proposed algorithm is able to reduce the overshoot of a rotor speed by compensating the estimated feedforward value to the speed controller. The feedforward value of the current reference is estimated by using a coordinate transformation and is approximated to the current reference after the transition of the control mode. The effectiveness of the proposed scheme is verified by experiments using an IPMSM drive system.

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References

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