A Novel Rapid Optimization Design Method for the Reverse-Salient Permanent Magnet Synchronous Motor

The reverse-salient permanent magnet synchronous motors (RSPMSMs) exhibit remarkable potential for multimode applications owing to their wide constant-power speed range. Currently, the design of RSPMSMs predominantly relies on conventional methods, which necessitate extensive engineering expertise and consume substantial time. To address this problem, this article proposes a novel rapid optimization design method for RSPMSMs. Initially, this article establishes the correlation between design indexes and electromagnetic parameters. Subsequently, the relationship between structural dimensions and rotor radius is derived from electromagnetic and structural parameters. Finally, a comprehensive design method is formulated, encompassing the progression from design indexes to electromagnetic parameters and ultimately to structural parameters. To verify its effectiveness, the RSPMSMs are designed using both the proposed design method and the multiobjective optimization design method. A prototype is manufactured and tested. Simulation and experimental results show that the method can be engineered for rapid and precise optimization design. Moreover, the method can be extended to the design of permanent magnet synchronous motors (PMSMs) under complex operating conditions.