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Torque Ripple Reduction for Switched Reluctance Motor with Optimized PWM Control Strategy

Author

Listed:
  • Hui Cai

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

  • Hui Wang

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

  • Mengqiu Li

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

  • Shiqi Shen

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

  • Yaojing Feng

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

  • Jian Zheng

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

Abstract

The high current ripple and torque ripple are the main drawbacks of the switched reluctance motor (SRM) since the nonlinearity and double saliency, which limits its applications. In order to eliminate the current variation and torque ripple, an optimized pulse width modulation (PWM) control is presented in this paper. The voltage ratio duty is able to be predicted precisely according to the information of the motor running parameter. Based on torque sharing functions (TSFs), the current profile is pre-computed and four regions are defined according to the reference current profiles. The three modes, excitation, demagnetization and freewheeling, are flexibly chosen according to the characteristic of the current profile. It is indicated that it is better than that of conventional PWM modulation in terms of current ripple and the current tracing performance is improved without increasing the switching frequency or changing the hysteresis band. The current ripple is defined as the peak-to-peak value dividing the average value and it is reduced by 40%. A comparison in terms of the torque ripple and copper loss is also carried out: the torque ripple is significantly reduced via the proposed scheme under both magnetic linear and saturation conditions. The torque ripple and copper loss are reduced by about 70% and 12%, respectively. The validity and effectiveness of the proposed control strategy is verified by simulation and experimental results.

Suggested Citation

  • Hui Cai & Hui Wang & Mengqiu Li & Shiqi Shen & Yaojing Feng & Jian Zheng, 2018. "Torque Ripple Reduction for Switched Reluctance Motor with Optimized PWM Control Strategy," Energies, MDPI, vol. 11(11), pages 1-27, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3215-:d:184050
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    References listed on IDEAS

    as
    1. Wu-Sung Yao, 2017. "Rapid Optimization of Double-Stators Switched Reluctance Motor with Equivalent Magnetic Circuit," Energies, MDPI, vol. 10(10), pages 1-20, October.
    2. Hye-Ung Shin & Kiwoo Park & Kyo-Beum Lee, 2015. "A Non-Unity Torque Sharing Function for Torque Ripple Minimization of Switched Reluctance Generators in Wind Power Systems," Energies, MDPI, vol. 8(10), pages 1-17, October.
    3. Yu Wang & Wenjuan Hao, 2018. "A Torque Impulse Balance Control for Multi-Tooth Fault Tolerant Switched-Flux Machines under Open-Circuit Fault," Energies, MDPI, vol. 11(7), pages 1-21, July.
    4. J. F. Pan & Weiyu Wang & Bo Zhang & Eric Cheng & Jianping Yuan & Li Qiu & Xiaoyu Wu, 2017. "Complimentary Force Allocation Control for a Dual-Mover Linear Switched Reluctance Machine," Energies, MDPI, vol. 11(1), pages 1-17, December.
    5. Cheng-Kai Lin & Jen-te Yu & Hao-Qun Huang & Jyun-Ting Wang & Hsing-Cheng Yu & Yen-Shin Lai, 2018. "A Dual-Voltage-Vector Model-Free Predictive Current Controller for Synchronous Reluctance Motor Drive Systems," Energies, MDPI, vol. 11(7), pages 1-29, July.
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    Cited by:

    1. Peter Bober & Želmíra Ferková, 2020. "Comparison of an Off-Line Optimized Firing Angle Modulation and Torque Sharing Functions for Switched Reluctance Motor Control," Energies, MDPI, vol. 13(10), pages 1-13, May.
    2. Pulivarthi Nageswara Rao & Ramesh Devarapalli & Fausto Pedro García Márquez & Hasmat Malik, 2020. "Global Sliding-Mode Suspension Control of Bearingless Switched Reluctance Motor under Eccentric Faults to Increase Reliability of Motor," Energies, MDPI, vol. 13(20), pages 1-38, October.

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