Quantitative analysis for influence of structure parameters on the slot harmonic in fractional-slot permanent magnet motors

Author

Yanwu Xu ; Jiwen Zhao ; Xuemin Fu

Author_Institution

Sch. of Electr. Eng. & Autom., Anhui Univ., Hefei, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

349

Lastpage

353

Abstract

Finite-element method is adopted to calculate cogging torque of the fractional slot permanent magnet motor. The harmonic influence of each structural parameter on the fractional slot motor can be achieved by changing four structural parameters in turn. THD is imported to analyze the influence of every structural parameter on the higher harmonics in fractional slot permanent motors quantitatively. Quantitative calculations indicate that width of slot opening, pole arc coefficient and air-gap size can affect the higher harmonics of the fractional slot motor deeply. Therefore, optimizing width of slot opening, pole arc coefficient and air gap size can greatly weaken the higher harmonic content.

Keywords

air gaps; finite element analysis; harmonic analysis; harmonic distortion; permanent magnet motors; torque; THD; air-gap size; cogging torque; finite-element method; fractional-slot permanent magnet motor; pole arc coefficient; quantitative analysis; slot harmonic; slot opening; structural parameter; total harmonic distortion; Air gaps; Forging; Harmonic analysis; Permanent magnet motors; Permanent magnets; Structural engineering; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013511

Filename

7013511