Design and Analysis of Interior Buried Permanent Magnet Synchronous Motor for Electric Vehicle Applications

Abstract

In this paper, a V-shaped interior buried permanent magnet synchronous motor (VSIBPMSM) is proposed to increase the flux linkage, back emf, torque, power factor, and efficiency by reducing the leakage flux, cogging torque, ripple torque, and core losses. The proposed rotor design focuses on reducing the size of the rib to reduce the reluctance caused by the rotor core. On the stator side, a semi-circular dimension type slot is preferred with a double-layer, distributed winding to increase the torque. The width of the stator yoke is optimized to reduce core losses. All the stator slots are skewed to reduce the cogging torque. The performance analysis of the proposed permanent magnet synchronous motor (PMSM) is compared with the surface-mounted PMSM (SMPMSM) in various aspects, and the proposed synchronous motor shows better performance compared with the surface-mounted synchronous motor. The step-by-step mathematical design and analysis of VSIBPMSM are presented, and modeling work is carried out using ANSYS Maxwell software.

Keywords

• cogging torque
• double layer distributed winding
• electromagnetic field analysis
• electric vehicle
• pmsm