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Analytical Analysis of a Novel Brushless Hybrid Excited Adjustable Speed Eddy Current Coupling

Author

Listed:
  • Yibo Li

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Heyun Lin

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Hai Huang

    (Jiangsu Magnet Valley Technologies Co., Ltd., Zhenjiang 212009, China)

  • Hui Yang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Qiancheng Tao

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Shuhua Fang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

Abstract

A novel brushless hybrid excited adjustable speed eddy current coupling is proposed for saving energy in the drive systems of pumps and fans. The topology and operation principle of the coupling are presented. Based on the real flux paths, the fluxes excited by permanent magnet (PM) and field current are analyzed separately. A magnetic circuit equivalent (MEC) model is established to efficiently compute the no-load magnetic field of the coupling. The eddy current and torque are calculated based on the proposed MEC model, Faraday’s law, and Ampere’s law. The resultant magnetic fields, eddy currents, and torques versus slip speeds under different field currents are studied by the MEC-based analytical method and verified by finite element analysis (FEA). The copper loss, core loss, and efficiency were investigated by FEA. The analytically predicted results agree well with the FEA, and the analysis results illustrate that a good speed regulation performance can be achieved by the proposed hybrid excited control.

Suggested Citation

  • Yibo Li & Heyun Lin & Hai Huang & Hui Yang & Qiancheng Tao & Shuhua Fang, 2019. "Analytical Analysis of a Novel Brushless Hybrid Excited Adjustable Speed Eddy Current Coupling," Energies, MDPI, vol. 12(2), pages 1-13, January.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:2:p:308-:d:199181
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    References listed on IDEAS

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    1. Abdelaziz, E.A. & Saidur, R. & Mekhilef, S., 2011. "A review on energy saving strategies in industrial sector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(1), pages 150-168, January.
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    Cited by:

    1. Xiaoquan Lu & Xinyi He & Ping Jin & Qifeng Huang & Shihai Yang & Mingming Chen, 2021. "General 3D Analytical Method for Eddy-Current Coupling with Halbach Magnet Arrays Based on Magnetic Scalar Potential and H-Functions," Energies, MDPI, vol. 14(24), pages 1-15, December.
    2. Xikang Cheng & Wei Liu & Ziliang Tan & Zhilong Zhou & Binchao Yu & Wenqi Wang & Yang Zhang & Sitong Liu, 2020. "Thermal Analysis Strategy for Axial Permanent Magnet Coupling Combining FEM with Lumped-Parameter Thermal Network," Energies, MDPI, vol. 13(19), pages 1-19, September.

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