Title :
Harmonic Analysis and Comparison of Permanent Magnet Vernier and Magnetic-Geared Machines
Author :
Jiangui Li ; Chau, K.T. ; Wenlong Li
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
In this paper, harmonic analysis and comparison of permanent magnet vernier (PMV) and magnetic-geared (MGd) machines are presented. The key is to analytically solve the governing Laplacian/quasi-Poissonian field equations in the air-gap regions. By using the time-stepping finite-element method, the analytical method is verified. Hence, the performances of the PMV machine are quantitatively compared with that of the MGd machine. The results show that the PMV machine can offer higher no-load EMF and higher torque-handling capability than its counterpart. Finally, the experimental result is given to further verify the validity of the analysis.
Keywords :
Laplace equations; Poisson equation; finite element analysis; gears; harmonic analysis; permanent magnet machines; torque; EMF; Laplacian-quasiPoissonian field equation; MGd machine; PMV machine; harmonic analysis; magnetic-geared machines; permanent magnet vernier machines; time-stepping finite-element method; torque-handling capability; Air gaps; Harmonic analysis; Magnetic analysis; Magnetomechanical effects; Rotors; Stator windings; Torque; Analytical method; harmonic analysis; low-speed machine; permanent magnet machine; vernier machine;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2159105
