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Design Optimization of an Electric Variable Transmission for Hybrid Electric Vehicles

Author

Listed:
  • Qiwei Xu

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Jing Sun

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Wenjuan Wang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Yunqi Mao

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Shumei Cui

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

Abstract

An electric variable transmission (EVT) for hybrid electric vehicles (HEVs) is investigated in this paper. With a special double rotor structure, the EVT splits and reintegrates the output power of the internal combustion engine (ICE) to run at its optimum working efficiency. However, the high electromagnetic coupling degree causes torque ripple and affects the dynamic performance of the EVT. After introducing the configuration and working principle, the torque mathematical model of the EVT in an ABC three-phase coordinate system is proposed to analyze the cause of this torque ripple. Besides, a finite element method-based (FEM) structural optimization design for reducing the torque ripple and improving the working stability is presented. The magnetic field distribution, induced voltage and torque property validate the rationality of optimization.

Suggested Citation

  • Qiwei Xu & Jing Sun & Wenjuan Wang & Yunqi Mao & Shumei Cui, 2018. "Design Optimization of an Electric Variable Transmission for Hybrid Electric Vehicles," Energies, MDPI, vol. 11(5), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1118-:d:144192
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    References listed on IDEAS

    as
    1. Qiwei Xu & Shumei Cui & Liwei Song & Qianfan Zhang, 2014. "Research on the Power Management Strategy of Hybrid Electric Vehicles Based on Electric Variable Transmissions," Energies, MDPI, vol. 7(2), pages 1-27, February.
    2. Qiwei Xu & Jing Sun & Lingyan Luo & Shumei Cui & Qianfan Zhang, 2016. "A Study on Magnetic Decoupling of Compound-Structure Permanent-Magnet Motor for HEVs Application," Energies, MDPI, vol. 9(10), pages 1-16, October.
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    Cited by:

    1. Rui Xiong & Suleiman M. Sharkh & Xi Zhang, 2018. "Research Progress on Electric and Intelligent Vehicles," Energies, MDPI, vol. 11(7), pages 1-5, July.

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