Abstract:
The torque performance of permanent magnet synchronous motors (PMSMs), especially the torque output capacity and torque pulsation, which have a significant impact on thei...Show MoreMetadata
Abstract:
The torque performance of permanent magnet synchronous motors (PMSMs), especially the torque output capacity and torque pulsation, which have a significant impact on their efficiency and capabilities. In this article, a novel hybrid rotor structure and improved Taguchi optimization design based on the fuzzy theory for PMSM torque performance enhancement are proposed. First, surface and interior magnet poles are combined to propose a new surface and interior hybrid PMSM (SIHPMSM), which adopts the Halbach array and U-shaped permanent magnets, respectively. In particular, an unevenly segmented and different eccentricity Halbach arrays is applied to optimize magnetic field performance. Second, the comparative analysis of typical rotor topologies is conducted, whose corresponding results indicate that SIHPMSM exhibits better electromagnetic properties. In addition, five essential variables are analyzed to further explore the affects of different parameters on the torque characteristics in SIHPMSM. Finally, on the basis of the Taguchi method and fuzzy theory, an improved optimization scheme is proposed, which can resolve the deficiencies of the traditional Taguchi method in multiobjective optimization. Several targets including torque and torque ripple are standardized by introducing the multiple performance characteristics index (MPCI). The final optimization results significantly improve the torque output performance while reducing the torque pulsations.
Published in: IEEE Transactions on Instrumentation and Measurement ( Volume: 73)