Optimal combination of stator and rotor pole numbers in flux-switching PM brushless AC machines

Author

Chen, J.T. ; Zhu, Z.Q. ; Thomas, A.S. ; Howe, D.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

2905

Lastpage

2910

Abstract

A simple analytical method is developed to compare the combinations of stator and rotor pole numbers in flux-switching PM machines in terms of back-EMF and electromagnetic torque. The winding connections for machines having all poles and alternate poles wound are determined, based on the coil-EMF vectors. The conditions are established for balanced symmetrical back-EMF waveform. It shows that the optimized rotor pole number should be close to the number of stator pole, while larger torque can be obtained by the machine with relatively higher rotor pole number.

Keywords

AC machines; brushless machines; permanent magnet machines; rotors; stators; torque; back EMF waveform; coil-EMF vectors; electromagnetic torque; flux-switching PM brushless AC machines; permanent magnet machines; rotor pole number; stator pole number; winding connections; AC machines; Electromagnetic analysis; Machine windings; Magnets; Rotors; Stators; Teeth; Temperature; Torque; Wounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4771250