Rotor Eddy Current Losses Analysis on BPMSM Using FEM

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Abstract:

It is important to clarify the rotor eddy current losses in bearingless permanent magnet synchronous (BPMSM) for temperature rising to induce irreversible demagnetization. In this paper, the torque and radial suspension force producing mechanisms of BPMSM are introduced. The relative motion relationships among radial suspension force, rotor magnetic field and suspension winding magnetic field are analyzed. The necessary conditions of producing stable controllable radial suspension force in single direction are concluded. The rotor eddy current losses in BPMSM with PB=PM+1 and PB=PM-1 are calculated and compared using 2D time-steeping finite element method. The research results have shown that the BPMSM with PB=PM+1 is the most suitable for high speed operation with the minimum eddy current losses in rotor.

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85-89

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January 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] M.A. Rahman, Akira Chiba, and Tadashi Fukao: Power Engineering Society General Meeting 2 (2004) 1272-1275.

Google Scholar

[2] Binder, M. Klohr, and T. Schneider: Losses in high speed permanent magnet motor with magnetic levitation for 40 000/min, 40Kw [C]. In Proc. 16th ICEM, Krakow, Poland, vol. 1, pp: 93-94, Sep. 5-8, (2004).

Google Scholar

[3] N. Miyamoto, T. Enomoto, M. Amada, J. Asam, A. Chiba, T. Fukao, S. Iwasaki, M. Takemoto: IEEE Transactions on magnetics 45 (2009) 2795-2798.

DOI: 10.1109/tmag.2009.2018658

Google Scholar

[4] K. Asami, A. Chiba, M. A. Rahman, T. Hoshino, and A. Nakajima: IEEE Transactions on magnetics 42(2005) 3820-3822.

Google Scholar

[5] M. Ooshima, S. Miyazawa, A. Chiba, F. Nakamura and T. Fukao. Performance evaluation and test results of a 11, 000r/min, 4kW surface-mounted permanent magnet-type bearingless motor [C]. Seventh International Symp. On Magnetic Bearings, Zurich, pp.377-382, Aug. (2000).

DOI: 10.1109/pccon.1997.638267

Google Scholar

[6] T. Schneider, A. Binder: IEEE Transactions on industry applications 42(2006) 1031-1037.

Google Scholar

[7] N. Heng, H. Yikang: Journal of Zhejiang University (Engineering Science), 39(2005) 891-895.

Google Scholar

[8] T. Okitsu, D. Matsuhashi, and K. Muramatsu: IEEE Transactions on magnetics 45 (2009) 4574-4577.

Google Scholar