Effect of slot-and-pole combination on the flux-weakening properties of fractional-slot concentrated windings

Author

Wang Chengyu ; Liu Chuang ; Jiang Renhua ; Zhang Jie ; Ning Yinhang

Author_Institution

Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

344

Lastpage

348

Abstract

A wide constant-power speed range can be achieved in surface permanent-magnet machine equipped with fraction-slot concentrated-winding (FSCW). This paper has studied the influence of slot-and-pole combination on the flux-weakening properties of FSCW machine. An analytical model for predicting the magnetic field distribution in the air-gap has been built, with a fourier-analysis-based method the magnetizing inductance and the harmonic leakage inductance can be calculated. It was shown that the inductance is increasing with the decreasing of machine´s slot-per-phase-per-pole value for FSCW. Finite element method simulations are used to confirm the results.

Keywords

Fourier analysis; air gaps; finite element analysis; magnetic fields; permanent magnet machines; FEM; FSCW machine; Fourier-analysis-based method; air-gap; analytical model; finite element method simulations; flux-weakening properties; fractional-slot concentrated windings; harmonic leakage inductance; magnetic field distribution; magnetizing inductance; slot-and-pole combination; surface permanent-magnet machine; Air gaps; Harmonic analysis; Inductance; Magnetic flux; Power capacitors; Rotors; Windings; concentrated; flux weakening; fractional-slot; harmonic leakage inductance;

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.2014.7013510

Filename

7013510