Design and Electromagnetic Analysis of SFPM

Topology and operation principle of a novel doublysalient permanent magnet motor (DSPM) named switchfluxing permanent magnet motor (SFPM) are analyzed. Atfirst, based on the design principle of DSPM, originaldimensions are determined. Secondly, after the physical modelof motor is built, based on finite element analysis, the magneticfield distributions, flux densities in air-gap with no-load, magnetize and demagnetize, open-circuit flux-linkage, back-EMF, winding inductance at different conditions areinvestigated. At last, the motor exhibits higher torque density, most appropriates for brushless AC operation and so on. Theresults provide a foundation for analysis, design andparameter optimization.