Title :
Finite Element Analysis of Flux-Switching PM Machine Considering Oversaturation and Irreversible Demagnetization
Author :
Sa Zhu ; Ming Cheng ; Wei Hua ; Xiuhua Cai ; Minghao Tong
Author_Institution :
Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
A typical 12/10 flux-switching permanent magnet (PM) machine is analyzed using finite-element (FE) method with special considerations of the silicon steel oversaturation, PM irreversible demagnetization, and the dc-biased magnetic induction on the hysteresis loss. The high flux density range of B-H curve which is difficult to measure is deduced with the combination of polynomial extrapolation and silicon steel saturation magnetization. A temperature-dependent sloped linear PM demagnetization model is incorporated into the FE model to analyze PM irreversible demagnetization and estimate the maximum allowable working temperature for PM. The influence of dc-biased magnetic induction on hysteresis loss is taken into account in core loss calculation. The FE analysis package is developed with the help of FE program generator.
Keywords :
electromagnetic induction; extrapolation; finite element analysis; magnetic flux; magnetic hysteresis; magnetic switching; permanent magnet machines; polynomials; silicon; steel; B-H curve; FE program generator; PM irreversible demagnetization; Si; core loss calculation; dc-biased magnetic induction; finite element analysis; flux-switching PM machine; flux-switching permanent magnet machine; hysteresis loss; polynomial extrapolation; silicon steel oversaturation; silicon steel saturation magnetization; temperature-dependent sloped linear PM demagnetization model; Demagnetization; Magnetic flux; Magnetic hysteresis; Rotors; Saturation magnetization; Silicon; Steel; DC-biased magnetic induction; Flux-switching permanent magnet (FSPM) machine; dc-biased magnetic induction; finite element program generator (FEPG); flux-switching permanent magnet (FSPM) machine; high flux density; irreversible demagnetization;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2445774