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Improved estimation of rotor position for sensorless control of a PMSM based on a sliding mode observer

  • Mechanical Engineering, Control Science and Information Engineering
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Abstract

This work proposes a new strategy to improve the rotor position estimation of a permanent magnet synchronous motor (PMSM) over wide speed range. Rotor position estimation of a PMSM is performed by using sliding mode observer (SMO). An adaptive observer gain was designed based on Lyapunov function and applied to solve the chattering problem caused by the discontinuous function of the SMO in the wide speed range. The cascade low-pass filter (LPF) with variable cut-off frequency was proposed to reduce the chattering problem and to attenuate the filtering capability of the SMO. In addition, the phase shift caused by the filter was counterbalanced by applying the variable phase delay compensation for the whole speed area. High accuracy estimation result of the rotor position was obtained in the experiment by applying the proposed estimation strategy.

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Authors and Affiliations

  1. Department of Electrical Engineering, Universitas Pertamina, Jakarta, 12220, Indonesia

    Wahyu Kunto Wibowo

  2. Refrigeration and Air-Conditioning Engineering, Pukyong National University, Busan, 608-739, Korea

    Seok-Kwon Jeong

Authors
  1. Wahyu Kunto Wibowo
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  2. Seok-Kwon Jeong
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Correspondence to Seok-Kwon Jeong.

Additional information

Foundation item: Project(2012(PS−2012−090)) supported by the Pukyong National University Research Abroad Fund, Korea

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Wibowo, W.K., Jeong, SK. Improved estimation of rotor position for sensorless control of a PMSM based on a sliding mode observer. J. Cent. South Univ. 23, 1643–1656 (2016). https://doi.org/10.1007/s11771-016-3219-5

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  • DOI: https://doi.org/10.1007/s11771-016-3219-5

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