Influence of slot opening on optimal stator and rotor pole combination and electromagnetic performance of flux-switching PM brushless AC machines

Author

Chen, J.T. ; Zhu, Z.Q. ; Iwasaki, S. ; Deodhar, R.

Author_Institution

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

fYear

2010

fDate

12-16 Sept. 2010

Firstpage

3478

Lastpage

3485

Abstract

The significant influence of slot opening on the optimal stator and rotor pole combination and the electromagnetic performance of the flux-switching PM (FSPM) machine is observed and investigated in this paper. A new FSPM brushless machine with remarkable slot opening relative to the magnet thickness is developed to reduce the magnet usage and increase the slot area. Its stator slot opening is almost several times of that in the conventional FSPM machine, but its magnet usage is only half. However, the new machine exhibits ~40% larger back-emf and electromagnetic torque than those of the conventional machine, while its cogging torque and torque ripple are significantly lower.

Keywords

brushless machines; permanent magnet machines; poles and zeros; rotors; stators; back-emf; cogging torque; electromagnetic performance; electromagnetic torque; flux-switching PM brushless AC machines; magnet thickness; magnet usage; optimal stator pole combination; rotor pole combination; slot area; stator slot opening; torque ripple; Magnetic flux; Rotors; Saturation magnetization; Stator windings; Teeth; Torque; brushless; combination of slot and pole numbers; flux-switching; low cost; permanent magnet;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

978-1-4244-5286-6

Electronic_ISBN

978-1-4244-5287-3

Type

conf

DOI

10.1109/ECCE.2010.5618298

Filename

5618298