A novel design of stator Ferrite PM single phase doubly salient small motor: FEM characterization and controlled dynamics

The present paper introduces a novel two coil 1 phase stator Ferrite PM motor [1]. The main targets are reduced material and fabrication costs in a robust topology at 90% efficiency for a 35W, 1600 rpm case study. Due to complicated flux lines (with tapered airgap for self-starting) and magnetic saturation, direct FEM characterization (preliminary design) was applied. Matlab Simulink modeling for controlled dynamics which made use FEM imposed cogging torque, emf and inductance with rotor position waveforms proved smooth motor starting to rated speed for speed performance, full load in both open loop (V/f) and close loop control.