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Adaptive Torque Estimation for an IPMSM with Cross-Coupling and Parameter Variations

Author

Listed:
  • Dooyoung Yang

    (Center, Dongwoon Anatech Co. Ltd., Seoul 05029, Korea)

  • Hyungsoo Mok

    (Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea)

  • Jusuk Lee

    (Department of Energy Mechanical Engineering, Gyeonggi College of Science and Technology, Gyeonggi 15073, Korea)

  • Soohee Han

    (Department of Creative IT Engineering, Phohang University of Science and Technology, Gyeongbuk 37673, Korea)

Abstract

This paper presents a new adaptive torque estimation algorithm for an interior permanent magnet synchronous motor (IPMSM) with parameter variations and cross-coupling between d- and q-axis dynamics. All cross-coupled, time-varying, or uncertain terms that are not part of the nominal flux equations are included in two equivalent mutual inductances, which are described using the equivalent d- and q-axis back electromotive forces (EMFs). The proposed algorithm estimates the equivalent d- and q-axis back EMFs in a recursive and stability-guaranteed manner, in order to compute the equivalent mutual inductances between the d- and q-axes. Then, it provides a more accurate and adaptive torque equation by adding the correction terms obtained from the computed equivalent mutual inductances. Simulations and experiments demonstrate that torque estimation errors are remarkably reduced by capturing and compensating for the inherent cross-coupling effects and parameter variations adaptively, using the proposed algorithm.

Suggested Citation

  • Dooyoung Yang & Hyungsoo Mok & Jusuk Lee & Soohee Han, 2017. "Adaptive Torque Estimation for an IPMSM with Cross-Coupling and Parameter Variations," Energies, MDPI, vol. 10(2), pages 1-13, January.
  • Handle: RePEc:gam:jeners:v:10:y:2017:i:2:p:167-:d:88957
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    Citations

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    Cited by:

    1. Faa-Jeng Lin & Yi-Hung Liao & Jyun-Ru Lin & Wei-Ting Lin, 2021. "Interior Permanent Magnet Synchronous Motor Drive System with Machine Learning-Based Maximum Torque per Ampere and Flux-Weakening Control," Energies, MDPI, vol. 14(2), pages 1-24, January.
    2. Guan-Ren Chen & Shih-Chin Yang & Yu-Liang Hsu & Kang Li, 2017. "Position and Speed Estimation of Permanent Magnet Machine Sensorless Drive at High Speed Using an Improved Phase-Locked Loop," Energies, MDPI, vol. 10(10), pages 1-17, October.

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