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Permanent Magnet Flux Linkage Analysis and Maximum Torque per Ampere (MTPA) Control of High Saturation IPMSM

Author

Listed:
  • Chengxu Li

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Wenjuan Zhang

    (Department of Electronic and Electrical Engineering, Changsha University, Changsha 410022, China)

  • Jian Gao

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

  • Shoudao Huang

    (College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)

Abstract

The maximum torque per ampere (MTPA) control is significant for improving the efficiency of the interior permanent magnet synchronous motor (IPMSM). However, for the high saturation IPMSM, the change of the permanent magnet (PM) flux linkage is more complicated, which can cause the MTPA control to deviate from the optimal solution. Therefore, an improved MTPA control method for the high saturation IPMSM is proposed in this paper. Compared with other methods, the proposed method improves the conventional models of flux linkage and torque by analyzing the nonlinear variation of the PM flux linkage with the dq -axis currents. Subsequently, an expression suitable for the MTPA control of high saturated IPMSM is derived based on the improved models. The proposed parameter fitting models are then fitted using data from 11 operating points and incorporated into the MTPA optimization algorithm to obtain the MTPA curve. Finally, the effectiveness of the proposed method in enhancing the control accuracy of the MTPA angle is verified through simulations and experiments.

Suggested Citation

  • Chengxu Li & Wenjuan Zhang & Jian Gao & Shoudao Huang, 2023. "Permanent Magnet Flux Linkage Analysis and Maximum Torque per Ampere (MTPA) Control of High Saturation IPMSM," Energies, MDPI, vol. 16(12), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:12:p:4717-:d:1171333
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    Cited by:

    1. Jianping Wang & Jian Ma & Xuan Zhao & Dean Meng & Kejie Xu & Dianxiang Guo, 2023. "Sensorless Control Strategy for Interior Permanent Magnet Synchronous Motors in the Full-Speed Section," Energies, MDPI, vol. 16(23), pages 1-19, November.

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