Design and Performance Evaluation of an Interior Permanent Magnet Synchronous Motor for an Electric Three-Wheeler

This paper unequivocally presents the meticulous design and comprehensive evaluation of a 5-kW interior permanent magnet synchronous motor for the application of an electric three-wheeler. The configuration investigated for this study is 36 stator slots and 6 rotor poles with a three-phase IPM with a lateral magnet rotor motor. Initially, the motor rating is estimated using a dynamic computation of the vehicle. For the obtained rating, the other main dimension is calculated analytically. For validation, performance analysis for acquired specs is performed using finite element-based software. The impact of stator and rotor parameter variance, as well as core material analysis, are then investigated utilizing various material thicknesses. The results revealed that variation in magnet thickness has a substantial effect on performance metrics, and the material study revealed that M700-50A is more efficient than other materials. Furthermore, to investigate the positive aspects of permanent magnets, many PM materials were investigated, and it was found that NdFeB magnets delivered the desired output. From the aforementioned analysis, the optimal design is derived, and its outcomes exhibit that it has a higher average torque, less torque, and is more efficient. As a result, it was determined that IPM with a lateral magnet design satisfied the vehicle's criteria and proved it to be a suitable design for an electric three-wheeler.