Multi-Parameter Optimization of 400V e-Compressor Motor Using Magnet Sizing and Flux Barrier Topology Using JMAG Simulation

This paper introduces a comprehensive approach aimed at maximizing the efficiency of Permanent Magnet Synchronous Motors by employing various slot-pole combinations. The study focuses on Fractional Slot Concentrated Winding Interior Permanent Magnet Synchronous Motors and conducts a quantitative comparison involving two distinct slot-pole configurations. These configurations are evaluated based on their torque capability, efficiency, and cogging torque characteristics. The research delves into the selection criteria for IPMSMs, leveraging the efficiency mapping analysis facilitated by genetic algorithms and optimization tools. Specifically, the investigation centers around two FSCW IPMSMs with optimized motor dimensions: one with an 8P-12S configuration and the other with a 10P-15S configuration. These motors are meticulously scrutinized and juxtaposed in terms of their electromagnetic performance at rated and peak operating points. The assessment takes into account factors like torque density, torque ripple, induced rotor losses, high efficiency, and demagnetization susceptibility. The 15S-10P motor configuration emerges as a preference for high torque requirements due to its notable efficiency and relatively heightened saliency. To further explore and validate these findings, a 2D Magnetic Transient FEA is executed utilizing an Electromagnetic Finite Element Software, offering a comprehensive perspective into the motor's electromagnetic behavior under varying conditions