JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2018, Vol. 48 ›› Issue (2): 81-85.doi: 10.6040/j.issn.1672-3961.0.2017.607

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The relationship between the number of magnetic poles and the bearing capacity of radial magnetic bearing

CHEN Rui, LI Hongwei*, TIAN Jing   

  1. School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China
  • Received:2017-12-13 Online:2018-04-20 Published:2017-12-13

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Abstract: The design principles of air gap, magnetic pole, rotor, stator, magnetic pole area and coil were given on the basis of practical engineering experiences. The structures of radial magnetic bearing with different rotor diameter and different magnetic pole number were designed. The finite element analysis software was used to simulate the electromagnetic field of radial magnetic bearing. The electromagnetic force and the magnetic field distribution were obtained. According to the simulation results, the influence of the number of poles on the bearing capacity of bearings under different rotor diameters was studied. The simulation results showed that the capacity of the radial magnetic bearing decreased significantly with the increase of the number of poles when the rotor diameter did not exceed 150 mm. While, the number of poles did not have a significant effect on the capacity of radial magnetic bearings when the rotor diameter reached 150 mm.

Key words: bearing capacity, finite element analysis, number of magnetic pole, radial magnetic bearing

CLC Number: 

  • TH69
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