Title :
Transient finite element analysis of flux switching permanent magnet machine with more accurate model
Author :
Zhu, S. ; Cheng, M. ; Hua, W. ; Tong, M. ; Cai, X.
Author_Institution :
Southeast Univ., Nanjing, China
Abstract :
In finite element (FE) analysis of flux switching permanent magnet (FSPM) machine, there are several challenges due to the unique structure and principle. Firstly, the local flux density in stator and rotor teeth may reaches 2.5T or even higher [1]. However, high flux density range of B-H curve is difficult to measure and reasonable extrapolation is indispensible. Secondly, the region of permanent magnet (PM) near the air gap is likely to be locally demagnetized when the rotor teeth is aligned to the PM, but this phenomena is rarely considered during transient FE calculation because commercial FE software just models the PM with remanence and permeability and irreversible demagnetization is assumed to not appear. Thirdly, the dc-biased magnetic induction in stator may influence the hysteresis loss [2].
Keywords :
finite element analysis; magnetic hysteresis; magnetic permeability; permanent magnet machines; remanence; rotors; stators; B-H curve; FSPM machine; air gap; dc biased magnetic induction; flux switching permanent magnet machine; hysteresis loss; irreversible demagnetization; local flux density; permeability; remanence; rotor teeth; stator teeth; transient finite element analysis; Analytical models; Demagnetization; Extrapolation; Finite element analysis; Magnetic flux; Magnetic hysteresis; Stators;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156548
