A FEA Study of the Optimal Magnetic Material for IPMSM Design in EV Applications

Abstract

Electric vehicles (EVs) are becoming increasingly popular, and the demand for efficient and powerful motors is growing. Interior Permanent Magnet Synchronous Motors (IPMSMs) are a promising choice for EV propulsion, but the efficiency of an IPMSM is highly dependent on the magnetic material used. This paper presents a comprehensive study of the magnetic material selection for IPMSM design in EV applications. Using Finite Element Analysis (FEA) and ANSYS Maxwell software, a 3kW, 48V IPMSM employing diverse magnetic materials was evaluated. The motor's performance was scrutinized across various operating speeds, and the results showed that the optimal magnetic material for this application is NdFe30. The findings of this study provide valuable insights into the factors that affect the efficiency of IPMSMs. The results also demonstrate the effectiveness of FEA for evaluating the performance of IPMSMs under different operating conditions.