Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Improvement on Sensorless Vector Control Performance of PMSM with Sliding Mode Observer

  • Wibowo, Wahyu Kunto (Department of Interdiciplinary Program of Mechatronics Engineering, Pukyong National University) ;
  • Jeong, Seok-Kwon (Department of Refrigeration and Air-Conditioning, Pukyong National University) ;
  • Jung, Young-Mi (Department of Refrigeration and Air-Conditioning, Pukyong National University)
  • Received : 2014.06.13
  • Accepted : 2014.09.16
  • Published : 2014.10.31
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Abstract

This paper proposes improvement on sensorless vector control performance of a permanent magnet synchronous motor (PMSM) with sliding mode observer. An adaptive observer gain and second order cascade low-pass filter (LPF) were used to improve the estimation accuracy of the rotor position and speed. The adaptive observer gain was applied to suppress the chattering intensity and obtained by using the Lyapunov's stability criterion. The second order cascade LPF was designed for the system to escalate the filtering performance of the back-emf estimation. Furthermore, genetic algorithm was used to optimize the system PI controller's performance. Simulation results showed the effectiveness of the suggested improvement strategy. Moreover, the strategy was useful for the sensorless vector control of PMSM to operate on the low-speed area.

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References

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