Electromagnetic design of a new radial flux permanent magnet motor

Abstract

This paper proposes a new design study for a three-phase permanent magnet motor. The radial flux machine has 12 pole type magnets in its rotor internally and a surface mounted stator has 36 coils surrounding the cores. Initially, a magnetostatic study has been performed, and then a 2D transient finite element analysis has been realized in order to verify the new design concept. Then, a harmonic analysis is performed to see the harmonic impact on the design performance and achieving a good prototype. The new-designed machine is promising since it gives symmetrical field structure under operation and the electromagnetic torques and current waveforms characteristics are good for different angular spreading of magnet.