Research interest in IPMSM drives has grown significantly over the past few years
due to some of their advantages such as, high power density, high torque to inertia ratio, free maintenance and high efficiency. Actually, efforts are devoted to develop robust control strategies and tried to reduce the torque ripple and to fix the switching frequency of the inverter. IPMSMs are widely used in electric vehicle systems due to their advantages, such as high efficiency and high power density. Accurate information of rotor position is indispensable for high-performance control of IPMSMs. Electromechanical sensors, e.g., resolvers, optical encoders, and hall-effect sensors, are commonly used to obtain rotor position/speed