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A Harmonic Suppression SVPWM Strategy for the Asymmetric Six-Phase Motor Fed by Two-Level Six-Phase VSI Operating in the Overmodulation Region

Author

Listed:
  • Li Zhao

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

  • Shoudao Huang

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

  • Jian Zheng

    (College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007, China)

  • Yuan Gao

    (Faculty of Engineering, University of Bristol, Queens Road, Bristol BS8 1QU, UK)

Abstract

For the asymmetric six-phase motor fed by a two-level six-phase voltage source inverter (VSI), when the modulation index is less than 0.5774, the motor operates in the linear region, and the harmonics in the Z 1 − Z 2 subspace can be suppressed to zero. When the modulation index is beyond 0.5774 and less than 0.6221, the motor operates in overmodulation regions, and the harmonics in the Z 1 − Z 2 subspace cannot be suppressed to zero. To minimize the harmonics in the Z 1 − Z 2 subspace for these regions, a harmonic suppression strategy, namely, harmonic suppression overmodulation strategy (HSOS), is proposed in this paper. The lower-order harmonics of the Z 1 − Z 2 subspace, namely, the 5th, 7th, 17th and 19th, are considered. Compared with the traditional four-vector overmodulation strategy (TFOS), the content of the 5th harmonic is reduced by about 20%, and the total harmonic distortion ( THD Z 1 Z 2 ) of these four kinds of harmonics is reduced by about 21% in the proposed HSOS. Finally, the simulation and experiment are carried out to verify the effectiveness of the proposed strategy.

Suggested Citation

  • Li Zhao & Shoudao Huang & Jian Zheng & Yuan Gao, 2022. "A Harmonic Suppression SVPWM Strategy for the Asymmetric Six-Phase Motor Fed by Two-Level Six-Phase VSI Operating in the Overmodulation Region," Energies, MDPI, vol. 15(20), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7589-:d:942341
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    References listed on IDEAS

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    1. Tomas Esparza Sola & Huang-Jen Chiu & Yu-Chen Liu & Arief Noor Rahman, 2022. "Extending DC Bus Utilization for Induction Motors with Stator Flux Oriented Direct Torque Control," Energies, MDPI, vol. 15(1), pages 1-22, January.
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