Analysis of Rotor Eccentricity in Switched Reluctance Motor With Parallel Winding Using FEM

This paper investigated rotor eccentricity effects on switched reluctance motor (SRM) and reduction of these effects by winding method. The motor was simulated by using 2-D transient magnetic finite-element (FE) analysis coupled with external circuits. The main exciting force of the vibration is the electromagnetic force in the stator that is calculated using Maxwell stress method. Serial connection and various parallel connections of windings were modeled in the external circuit. It was found from the simulation results that the currents could be adjusted in parallel paths and unbalanced magnetic forces (UMFs) could be reduced. Experiment results also revealed that the acceleration of stator surface was minimized with the proposed method.