EFFECT OF END CORE FLUX ON THE PERFORMANCE OF THE SWITCHED RELUCTANCE MOTOR

The aim of the paper is to bridge the gap between two-dimensional and three-dimensional finite-element modelling of the switched reluctance motor. The flux linkage/current diagram and static torque profile of a four phase 8/6 machine are computed with the aid of two-dimensional and three-dimensional models. Comparison of the predicted values with measurements on the motor demonstrates the superiority of three-dimensional modelling. Three-dimensional effects in the switched reluctance motor are examined and a suitable procedure for estimating the end-core flux at a range of rotor positions and excitations is proposed. The sensitivity of the end-core flux value to magnetic circuit parameters such as applied MMF, magnetic saturation and path reluctance is presented