Analytical prediction of the incremental inductance of the permanent magnet synchronous motors

Author

Wang, Shyh-Jier ; Lin, Shir-Kuan

Author_Institution

Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

2044

Lastpage

2046

Abstract

An analytical method for calculating the incremental line inductance of a permanent-magnet synchronous motor is proposed in this paper. First, the incremental inductance is simplified as a linear combination of the slot inductance and the air-gap inductance, which are both estimated by the equivalent magnetic circuits. The reluctance of the rotor back irons and the stator back irons are ignored when the slot inductance is calculated. However, for the calculation of the air-gap inductance, the iron saturations and the perturbations of the permanent magnet are considered. The proposed method is verified by a finite-element method.

Keywords

air gaps; finite element analysis; magnetic circuits; permanent magnet motors; rotors; stators; synchronous motors; air-gap inductance; finite-element method; incremental inductance; iron saturation; linear combination; magnetic circuits; permanent magnet; rotor back irons; slot inductance; stator back irons; synchronous motors; Air gaps; Inductance; Iron; Magnetic analysis; Magnetic circuits; Permanent magnet motors; Permanent magnets; Rotors; Stators; Synchronous motors; Analytical method; finite-element method; incremental inductance; iron saturation; permanent magnet synchronous;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.830629

Filename

1325400