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2026-09-20
Vibration Analysis and Optimization of Flux Reversal PM Machine with PM Chamfer
By
Progress In Electromagnetics Research C, Vol. 173, 299-307, 2026
Abstract
Flux reversal permanent magnet machine (FRPMM), owing to their high power density and excellent low-speed high-torque capability, is considered promising for low-speed direct-drive hydropower generation systems. However, the vibration and noise caused by radial electromagnetic force hinder the development of the FRPMM. A novel FRPMM with a permanent magnet (PM) chamfer on the stator is proposed. First, the radial force density, average torque, and torque ripple are taken as optimization objectives. The multi-objective genetic algorithm (MOGA) is used to optimize the machine. Next, the space-time characteristics of air-gap flux density and radial force density are obtained based on finite-element simulation. The modal analysis and harmonic response analysis of the stator are carried out. The results show that the radial force density of the proposed FRPMM is significantly reduced, and the machine's vibration characteristics are optimized.
Citation
Bo Tian, Qiang Shi, Jianyi Yang, Guofeng Diao, Mingxin Luo, and Libing Jing, "Vibration Analysis and Optimization of Flux Reversal PM Machine with PM Chamfer," Progress In Electromagnetics Research C, Vol. 173, 299-307, 2026.
doi:10.2528/PIERC26072201
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