Title :
Low cost flux-switching brushless AC machines
Author :
Chen, J.T. ; Zhu, Z.Q. ; Iwasaki, S. ; Deodhar, R.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
A low cost 3-phase DC winding excited flux-switching (FS) brushless AC machine is developed from the FS permanent magnet (FSPM) machine. The influence of stator and rotor pole number combination on its electromagnetic performance, including flux-linkage and back-emf waveforms, electromagnetic static torque, and torque-current density characteristics, are predicted by 2-D finite element analyses and validated by experiment. In addition, the torque capability of the FS machine and FSPM machines with rare earth and ferrite magnets, respectively, are compared by the finite element analyses. It is found that whilst it is low cost, the torque capability in the FS machine may be limited by the significant magnetic saturation in the stator teeth.
Keywords :
AC machines; brushless machines; finite element analysis; permanent magnet machines; rotors; stators; torque; 2D finite element analysis; DC winding excited flux-switching brushless AC machine; FS permanent magnet machine; back-emf waveforms; electromagnetic static torque; ferrite magnets; flux-linkage; magnetic saturation; rotor pole number; stator pole number; torque-current density; Rotors; Saturation magnetization; Stator windings; Teeth; Torque; Windings;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2010 IEEE
Conference_Location :
Lille
Print_ISBN :
978-1-4244-8220-7
DOI :
10.1109/VPPC.2010.5728984
