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Analytical Modeling of Static Eccentricities in Axial Flux Permanent-Magnet Machines with Concentrated Windings

Author

Listed:
  • Yunkai Huang

    (Engineering Research Center for Motion Control of Ministry of Education, Southeast University, Nanjing 210096, China)

  • Baocheng Guo

    (Engineering Research Center for Motion Control of Ministry of Education, Southeast University, Nanjing 210096, China)

  • Ahmed Hemeida

    (Department of Electrical Energy, Systems and Automation, Ghent University, Ghent B-9000, Belgium)

  • Peter Sergeant

    (Department of Electrical Energy, Systems and Automation, Ghent University, Ghent B-9000, Belgium)

Abstract

The aim of this paper is to calculate the static eccentricity (SE) of a double rotor axial flux permanent magnet (AFPM) machine by using a general analytical model. The flux density in the air gap under healthy conditions is calculated firstly, where the axial and circumferential magnetic flux densities are obtained using a coupled solution of Maxwell’s equations and Schwarz-Christoffel (SC) mapping. The magnetic flux densities under SE conditions are calculated afterwards using a novel bilinear mapping. Some important electromagnetic parameters, e.g., back electromotive force (EMF), cogging torque and electromagnetic (EM) torque, are calculated for both SE and healthy conditions, and compared with the finite element (FE) model. As for the double rotor AFPM, SE does not contribute much effect on the back EMF and EM torque, while the cogging torque is increased. At each calculated section, FE models were built to validate the analytical model. The results show that the analytical predictions agree well with the FE results. Finally, the results of analytical model are verified via experimental results.

Suggested Citation

  • Yunkai Huang & Baocheng Guo & Ahmed Hemeida & Peter Sergeant, 2016. "Analytical Modeling of Static Eccentricities in Axial Flux Permanent-Magnet Machines with Concentrated Windings," Energies, MDPI, vol. 9(11), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:11:p:892-:d:81726
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    References listed on IDEAS

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    1. Wei Hua & Ling Kang Zhou, 2015. "Investigation of a Co-Axial Dual-Mechanical Ports Flux-Switching Permanent Magnet Machine for Hybrid Electric Vehicles," Energies, MDPI, vol. 8(12), pages 1-19, December.
    2. Yee Pien Yang & Guan Yu Shih, 2016. "Optimal Design of an Axial-Flux Permanent-Magnet Motor for an Electric Vehicle Based on Driving Scenarios," Energies, MDPI, vol. 9(4), pages 1-18, April.
    3. Chi-Jeng Bai & Wei-Cheng Wang & Po-Wei Chen & Wen-Tong Chong, 2014. "System Integration of the Horizontal-Axis Wind Turbine: The Design of Turbine Blades with an Axial-Flux Permanent Magnet Generator," Energies, MDPI, vol. 7(11), pages 1-21, November.
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    Cited by:

    1. Lei Xu & Mingyao Lin & Xinghe Fu & Kai Liu & Baocheng Guo, 2017. "Analytical Calculation of the Magnetic Field Distribution in a Linear and Rotary Machine with an Orthogonally Arrayed Permanent Magnet," Energies, MDPI, vol. 10(4), pages 1-18, April.
    2. Alexandra C. Barmpatza & Joya C. Kappatou, 2020. "Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator," Energies, MDPI, vol. 13(21), pages 1-17, October.
    3. Alireza Rasekh & Peter Sergeant & Jan Vierendeels, 2016. "Development of Correlations for Windage Power Losses Modeling in an Axial Flux Permanent Magnet Synchronous Machine with Geometrical Features of the Magnets," Energies, MDPI, vol. 9(12), pages 1-17, November.
    4. Feng Chai & Yunlong Bi & Yulong Pei, 2017. "Magnet Shape Optimization of Two-Layer Spoke-Type Axial Flux Interior Permanent Magnet Machines," Energies, MDPI, vol. 11(1), pages 1-14, December.

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