Theory and Simulation of Linearized Force Coefficients for Active Magnetic Bearings with Multiple Magnetic Poles

Authors

  • Tianpeng Fan 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Jinpeng Yu 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Zhe Sun 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Xingnan Liu 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Xiaoshen Zhang 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Jingjing Zhao 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Xunshi Yan 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Haoyu Zuo 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China
  • Zhengang Shi 1 Institute of Nuclear and New Energy Technology of Tsinghua University 2 Collaborative Innovation Center of Advanced Nuclear Energy Technology 3 Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Beijing, 100084, China

Keywords:

Active magnetic bearing, ANSYS Maxwell simulation, error analysis, force coefficient, multiple magnetic poles

Abstract

Active magnetic bearing (AMB) is a kind of typical mechatronic product which is widely used due to its high performance. Since the electromagnetic force is strongly nonlinear, the force-displacement coefficient and the force-current coefficient need to be linearized in the process of controlling the AMB. This paper analyzes the three most common magnetic bearings and gives their linearized force formulas. Simulations show that the formulas have high precision. In addition, the source of errors is also analyzed in this paper.

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References

S. E. Mushi, Z. Lin, and P. E. Allaire, “Design, construction, and modeling of a flexible rotor active magnetic bearing test rig,” IEEE/ASME Transactions on Mechatronics, vol. 17, no. 6, pp. 1170-1182, 2012.

J. Witte, H. M. N. K. Balini, and C. W. Scherer, “Experimental results with stable and unstable LPV controllers for active magnetic bearing systems,” IEEE International Conference on Control Applications IEEE, pp. 950-955, 2010.

G. Schweitzer and E. H. Maslen, Magnetic Bearings: Theory, Design, & Application to Rotating Machinery. 2009.

W de Boer, Active Magnetic Bearings: Modelling & Control of a Five Degrees of Freedom Rotor. Diss. Eindhoven University of Technology, 1998.

Y. A. Amer and U. H. Hegazy, “Resonance behavior of a rotor-active magnetic bearing with timevarying stiffness,” Chaos, Solitons & Fractals, vol. 34, no. 4, pp. 1328-1345, 2007.

S. Bouaziz, et al., “A theoretical model for analyzing the dynamic behavior of a misaligned rotor with active magnetic bearings,” Mechatronics, vol. 21, no. 6, pp. 899-907, 2011.

X. Zhang, et al., “Force-current factor investigation of a radial active magnetic bearing with large load capacity,” Transportation Electrification AsiaPacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo. IEEE, 2014.

J. C. Ji and C. H. Hansen, “Non-linear oscillations of a rotor in active magnetic bearings,” Journal of Sound and Vibration, vol. 240, no. 4, pp. 599-612, 2001.

M. Autila, E. Lantto, and A. Arkkio, “Determination of forces and linearized parameters of radial active magnetic bearings by finite element technique,” IEEE Transactions on Magnetics, vol. 34, no. 3, pp. 684-694, 1998.

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Published

2019-04-01

How to Cite

[1]
Tianpeng Fan, “Theory and Simulation of Linearized Force Coefficients for Active Magnetic Bearings with Multiple Magnetic Poles”, ACES Journal, vol. 34, no. 04, pp. 598–604, Apr. 2019.

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