Research on Equivalent Magnetic Circuit Modeling and Electromagnetic Design of Vehicle Inverted-Triangle Interior Permanent Magnet Synchronous Motor

The inverted-triangle permanent magnet interior rotor is a new type of motor rotor structure for vehicles. First, this paper introduces and qualitatively analyzes the inverted-triangle interior permanent magnet synchronous motor (IPMSM), and establishes the equivalent magnetic circuit model of the inverted triangle IPMSM under no-load and load conditions. Secondly, based on the equivalent magnetic circuit model, a preliminary design of an inverted-triangle IPMSM for an 8-pole 48-slot vehicle was carried out. Finally, the finite element software is used to optimize the rotor of the motor to obtain ideal electromagnetic performance. The simulation results show that with the same torque performance, the amount of permanent magnets of the inverted-triangle IPMSM is significantly less than that of the V-shaped IPMSM, which is beneficial to reducing the cost of motors for automobiles.