DETERMINATION OF OPTIMUM ELECTRICAL SHIFT ANGLE OF AUXILIARY WINDING TO IMPROVE PERFORMANCE OF TWO PHASE INDUCTION MOTOR

In a conventional two phase induction motor stator windings are orthogonal together, electrically. In this paper, affirming results obtained from simulations and using theoretical results in this field, we discuss and analysis stator winding of two phase electric motor in orthogonal and un-orthogonal states reaching optimum angle for better performance of this motor, firstly in stationary reference frame a model for 2-phase induction motors with non-orthogonal stator windings and difference between theoretical results and practical samples of this motor are given, and then using Matlab simulation and Finite Element Analysis software, motor behavior is simulated. The results of the simulation indicate improvement in motor performance in lieu of some special angles differences between stator windings relative to orthogonal state.