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Characteristic Analysis and Control of a Hybrid Excitation Linear Eddy Current Brake

Author

Listed:
  • Baoquan Kou

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

  • Yinxi Jin

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

  • Lu Zhang

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

  • He Zhang

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

Abstract

In this paper, a novel hybrid excitation linear eddy current brake is presented as a braking system for high-speed road and rail vehicles. The presence of the permanent magnets (PMs), whose flux lines in the primary core are oppositely directed with respect to the flux lines by the excitation windings, has the effect of mitigating the saturation of the iron in the teeth of the primary core. This allows the brake to be fed with more intense currents, improving the braking force. First, using the magnetic equivalent circuit method and the layer theory approach, the analytical model of the hybrid excitation linear eddy current brake was developed, which can account for the saturation effects occurring in the iron parts. The saturation effects make the design and control of eddy current brakes more difficult. Second, the relationship between the braking force characteristics and the design parameters were analyzed to provide useful information to the designers of eddy current brakes. Then, the controller of the hybrid excitation linear eddy current brake was designed to control the amplitude of the braking force. Finally, experimental measurements were conducted to verify the validity of the theoretical analysis.

Suggested Citation

  • Baoquan Kou & Yinxi Jin & Lu Zhang & He Zhang, 2015. "Characteristic Analysis and Control of a Hybrid Excitation Linear Eddy Current Brake," Energies, MDPI, vol. 8(7), pages 1-24, July.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:7:p:7441-7464:d:52960
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    Citations

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    Cited by:

    1. Chuntao Chen & Jie Xu & Xibo Yuan & Xinzhen Wu, 2019. "Characteristic Analysis of the Peak Braking Force and the Critical Speed of Eddy Current Braking in a High-Speed Maglev," Energies, MDPI, vol. 12(13), pages 1-15, July.
    2. Paul Stewart & Chris Bingham, 2016. "Electrical Power and Energy Systems for Transportation Applications," Energies, MDPI, vol. 9(7), pages 1-3, July.

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