Reduction of vibration and acoustic noise in the switched reluctance motor by using new improved stator yoke shape

Switched reluctance motor has many applications in the industry. It has a simple structure and cheap manufacturing process. However, it has not been as useful as the other kinds of motors because of its vibration and acoustic noise. This paper is focused on the reduction of these drawbacks using machine designing aspects. Seven different shapes for the stator yoke with equal cross-section areas are studied and the one with minimum vibrations is selected. Then, keeping the general shape of the yoke, its dimensions are optimized to yield least possible amplitude of vibrations. The simulation results demonstrated a good reduction on the vibrations of the optimized shape of the yoke in comparing with respect to the original one. Finite element method is used as the main tool of the simulations.