Journal of international Conference on Electrical Machines and Systems

Journal of International Conference on Electrical Machines and Systems (대한전기학회 분과)
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Performance Improvement of Slotless SPMSM Position Sensorless Control in Very Low-Speed Region

  • Iwata, Takurou (Dept. of Electrical and Information Systems, Osaka Prefecture University) ;
  • Morimoto, Shigeo (Dept. of Electrical and Information Systems, Osaka Prefecture University) ;
  • Inoue, Yukinori (Dept. of Electrical and Information Systems, Osaka Prefecture University) ;
  • Sanada, Masayuki (Dept. of Electrical and Information Systems, Osaka Prefecture University)
  • Received : 2013.04.15
  • Accepted : 2013.05.01
  • Published : 2013.06.01
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Abstract

This paper proposes a method for improving the performance of a position sensorless control system for a slotless surface permanent magnet synchronous motor (SPMSM) in a very low-speed region. In position sensorless control based on a motor model, accurate motor parameters are required because parameter errors would affect position estimation accuracy. Therefore, online parameter identification is applied in the proposed system. The error between the reference voltage and the voltage applied to the motor is also affect position estimation accuracy and stability, thus it is compensated to ensure accuracy and stability of the sensorless control system. In this study, two voltage error compensation methods are used, and the effects of the compensation methods are discussed. The performance of the proposed sensorless control method is evaluated by experimental results.

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References

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