Comparison Characteristics According to Changing Magnet Pole-Arc of Double-Layered V-shape IPMSM for Large Commercial EVs

The Interior Permanent Magnet Synchronous Motor (IPMSM) for large commercial Electrical Vehicles (EV s) about 300kW class is proposed to compare the motor characteristics such as back emf, torque, air-gap flux density. In this paper, the characteristics according to varying pole-arc is analyzed. Since the proposed IPMSM has doubled-layer and V -type permanent magnets, the design parameters are defined to compare characteristics. Then, the effects of harmonics according to varying pole-arc to pole-pitch ratio is investigated.