Title :
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
fDate :
7/1/2004 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.830629
