Permanent magnet assisted synchronous reluctance motor with asymmetric rotor for high torque performance

Permanent magnet assisted synchronous reluctance motor (PMA-SynRM) is a kind of high torque density energy conversion device widely used in modern industry. In this paper, based on the basic topology PMA-SynRM, novel PMA-SynRM asymmetric rotor with position-biased proposed. The design realizes concentration magnetic field lines air gap to obtain higher electromagnetic torque, and makes both peak value at same current phase angle. configuration theoretically illustrated by space vector diagram, feasibility performance verified. Through finite element simulation, effect side barrier output Mises stress under asymmetrical are analyzed. Then characteristics including airgap flux density, back EMF, ripple, losses, efficiency calculated for proposed PMA-SynRMs. results show that has than topology. Moreover, ripple reduced method harmonic injection, whole cycle Finally, endurance avoid PM demagnetization confirmed remanence calculation.