Title :
Analysis of magnetic field by the PMs in a PMLSM based on the improved spatial harmonic method
Author :
Xuanfeng, Shangguan ; Jun, Zhu
Author_Institution :
Sch. of Electr. Eng., Henan Polytechic Univ., Jiaozuo, China
Abstract :
In this paper, a novel analytical method to analyze the magnetic field of a permanent magnet linear synchronous motor (PMLSM), improved spatial harmonic method, is proposed. Based on a multi-layered model, the tooth-slot region of the primary iron-core of a PMLSM is replaced by a continuous region comprising anisotropic material, the role of PMs is simulated by equivalent magnetizing currents. The analytical expressions of magnetic vector potentials and flux densities are derived. The magnetic field of PMs is analyzed and induced emf is calculated with the improved spatial harmonic method. Its validity is confirmed with 2-D Finite Element analysis and experimental results.
Keywords :
cores; electric potential; finite element analysis; linear synchronous motors; magnetic fields; permanent magnet motors; synchronous motors; 2D finite element analysis; PMLSM; PMLSM primary iron-core tooth-slot region; analytical method; anisotropic material; equivalent magnetizing current; flux density; improved spatial harmonic method; induced EMF; magnetic field analysis; magnetic vector potential; multilayered model; permanent magnet linear synchronous motor; Coils; Finite element methods; Harmonic analysis; Magnetic fields; Permanent magnet motors; Synchronous motors; Windings; PMLSM; improved spatial harmonic; magnetic field;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073808
