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General 3D Analytical Method for Eddy-Current Coupling with Halbach Magnet Arrays Based on Magnetic Scalar Potential and H-Functions

Author

Listed:
  • Xiaoquan Lu

    (State Grid Jiangsu Electric Power Co., Ltd., Marketing Service Center, Nanjing 210019, China)

  • Xinyi He

    (The College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China)

  • Ping Jin

    (The College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China)

  • Qifeng Huang

    (State Grid Jiangsu Electric Power Co., Ltd., Marketing Service Center, Nanjing 210019, China)

  • Shihai Yang

    (State Grid Jiangsu Electric Power Co., Ltd., Marketing Service Center, Nanjing 210019, China)

  • Mingming Chen

    (State Grid Jiangsu Electric Power Co., Ltd., Marketing Service Center, Nanjing 210019, China)

Abstract

Rapid and accurate eddy-current calculation is necessary to analyze eddy-current couplings (ECCs). This paper presents a general 3D analytical method for calculating the magnetic field distributions, eddy currents, and torques of ECCs with different Halbach magnet arrays. By using Fourier decomposition, the magnetization components of Halbach magnet arrays are determined. Then, with a group of H-formulations in the conductor region and Laplacian equations with magnetic scalar potential in the others, analytical magnetic field distributions are predicted and verified by 3D finite element models. Based on Ohm’s law for moving conductors, eddy-current distributions and torques are obtained at different speeds. Finally, the Halbach magnet arrays with different segments are optimized to enhance the fundamental amplitude and reduce the harmonic contents of air-gap flux densities. The proposed method shows its correctness and validation in analyzing and optimizing ECCs with Halbach magnet arrays.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:24:p:8458-:d:702723
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    References listed on IDEAS

    as
    1. Yusuf Akcay & Paolo Giangrande & Oliver Tweedy & Michael Galea, 2021. "Fast and Accurate 2D Analytical Subdomain Method for Coaxial Magnetic Coupling Analysis," Energies, MDPI, vol. 14(15), pages 1-18, July.
    2. Jean-Michel Grenier & Ramón Pérez & Mathieu Picard & Jérôme Cros, 2021. "Magnetic FEA Direct Optimization of High-Power Density, Halbach Array Permanent Magnet Electric Motors," Energies, MDPI, vol. 14(18), pages 1-19, September.
    3. 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.
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