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Influence of Winding Configurations and Stator/Rotor Pole Combinations on Field Back-EMF Ripple in Switched Flux Hybrid Excited Machines

Author

Listed:
  • Zhiyu Yang

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Xiaoyong Sun

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Ruizhao Han

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Ruyu Shang

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Zhen Chen

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

  • Xiangdong Liu

    (School of Automation, Beijing Institute of Technology, Beijing 100081, China)

Abstract

Similar to armature back electromotive force (armature back-EMF), the back-EMF also exists in the field winding of hybrid excited machines. However, the existence of field back electromotive force (field back-EMF) is harmful to the safe and stable operation of machine systems, e.g., higher losses, lower efficiency, higher torque ripple, and reduced control performance. This paper systematically investigates the influence of armature/field winding configurations together with stator/rotor pole combinations on the field back-EMF ripple in hybrid excited machines with switched-flux stators. The two-dimensional (2D) time-stepping finite element modeling and prototyping experiments are used for the research. The investigated field and armature coil pitches equal to 1, i.e., non-overlapped windings. The influential factors that are investigated in this paper mainly include the number of layers of field/armature windings, the number of field/armature coils, and the stator/rotor pole combinations. The results show that the field back-EMF’s harmonic order and peak-to-peak value are closely associated with field/armature winding configurations and stator/rotor pole combinations under various conditions. Finally, for validation of the results predicted by the finite element method, a prototype machine is built and tested. Overall, non-overlapped double-layer armature and field windings are recommended for the hybrid excited switched flux machines with various stator/rotor pole combinations to realize relatively lower field back-EMF under different conditions.

Suggested Citation

  • Zhiyu Yang & Xiaoyong Sun & Ruizhao Han & Ruyu Shang & Zhen Chen & Xiangdong Liu, 2024. "Influence of Winding Configurations and Stator/Rotor Pole Combinations on Field Back-EMF Ripple in Switched Flux Hybrid Excited Machines," Energies, MDPI, vol. 17(23), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:23:p:5906-:d:1528732
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    References listed on IDEAS

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    1. Ryszard Palka & Kamil Cierzniewski & Marcin Wardach & Pawel Prajzendanc, 2023. "Research on Innovative Hybrid Excited Synchronous Machine," Energies, MDPI, vol. 16(18), pages 1-14, September.
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