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An Accurate Discrete Current Controller for High-Speed PMSMs/Gs in Flywheel Applications

Author

Listed:
  • Xiang Zhang

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
    Power Electronics, Machines and Control (PEMC) Group, University of Nottingham, Nottingham NG7 2RD, UK
    Bio, Electro and Mechanical Systems (BEAMS) Group, Université Libre de Bruxelles, 1050 Brussels, Belgium)

  • Yunlong Chen

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Yves Mollet

    (Bio, Electro and Mechanical Systems (BEAMS) Group, Université Libre de Bruxelles, 1050 Brussels, Belgium)

  • Jiaqiang Yang

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Johan Gyselinck

    (Bio, Electro and Mechanical Systems (BEAMS) Group, Université Libre de Bruxelles, 1050 Brussels, Belgium)

Abstract

High-speed Permanent-Magnet Synchronous Motors/Generators (PMSMs/Gs) in a Flywheel Energy Storage System (FESS) are faced with high cross-coupling voltages and low switching-to-fundamental frequency ratios. High cross-coupling voltages between d-q axis current loops lead to transient current errors, which is more serious at lower switching-to-fundamental-frequency ratios. If the delays are not properly considered during the current controller design in a digital control system, the low switching-to-fundamental-frequency ratios may result in oscillatory or unstable responses. In this study, an accurate discrete current controller for high-speed PMSMs/Gs is proposed based on an accurate discrete model that takes the phase and magnitude errors generated during the sampling period into consideration, and an Extended State Observer (ESO) is applied to estimate and compensate the back EMF error. The cross-coupling problem is well settled, and the current loop dynamic at lower switching-to-fundamental frequency ratios is improved. Finally, the proposed discrete controller is validated on a 12,000 rpm PMSM/G prototype.

Suggested Citation

  • Xiang Zhang & Yunlong Chen & Yves Mollet & Jiaqiang Yang & Johan Gyselinck, 2020. "An Accurate Discrete Current Controller for High-Speed PMSMs/Gs in Flywheel Applications," Energies, MDPI, vol. 13(6), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:6:p:1458-:d:334790
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    Citations

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    Cited by:

    1. Ying Zhou & Zuyu Wu & Yutong Wu, 2021. "Intelligent Permanent Magnet Motor-Based Servo Drive System Used for Automated Tuning of Piano," Energies, MDPI, vol. 14(20), pages 1-23, October.
    2. Hongjin Hu & Haoze Wang & Kun Liu & Jingbo Wei & Xiangjie Shen, 2022. "A Simplified Space Vector Pulse Width Modulation Algorithm of a High-Speed Permanent Magnet Synchronous Machine Drive for a Flywheel Energy Storage System," Energies, MDPI, vol. 15(11), pages 1-21, June.

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