Analytical modeling of the magnetic levitation force for an inset permanent magnet type bearingless motor

Author

Heng, Nian ; Yikang, He ; Yuan, Zhou

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou

Volume

2

fYear

2005

fDate

29-29 Sept. 2005

Firstpage

893

Abstract

Based on the operation principle of inset permanent magnet type bearingless motor and the magnetic energy approach, a relatively accurate analytical expression of the magnetic levitation force was proposed in this paper with the rotor saliency effect and the eccentricity in the location of stator and rotor taking into consideration. As the parameter of the levitation force model is the key to calculate the suspension force and to realize the stable suspension operation, the extraction of the key parameter was studied in detail and realized by the finite element method. Moreover, the control system of the inset permanent magnet type BLM was developed based on the parameters extracted, and then, the simulation result of the suspension operation validated the accuracy of the parameter extraction method

Keywords

finite element analysis; magnetic forces; magnetic levitation; permanent magnet motors; rotors; stators; finite element method; magnetic energy approach; magnetic levitation force modeling; parameter extraction method; permanent magnet type bearingless motor; rotor saliency effect; stator location; suspension force calculation; Analytical models; Control system synthesis; Finite element methods; Magnetic analysis; Magnetic levitation; Parameter extraction; Permanent magnet motors; Permanent magnets; Rotors; Stators; analytical expression; bearingless motor; magnetic energy approach; parameter extraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on

Conference_Location

Nanjing

Print_ISBN

7-5062-7407-8

Type

conf

DOI

10.1109/ICEMS.2005.202673

Filename

1574906