Analysis and Suppression of Nonswitching High‐Frequency Band Vibration in Fractional‐Slot Concentrated‐Winding Permanent Magnet Synchronous Machines

• DOI: 10.1049/elp2.70013
• Publication Date: 2025-03-12T05:30:04Z
• Authors: Zhuting Zhao; Wenxiang Zhao; Renxin Xiao; Yunhan Zhou; Yuhua Sun; Jie Li
• Keywords: Frequency band

ABSTRACT Traditionally, it is well known that the lowest‐order and pole‐order (2 p th‐order) radial forces play a leading role in vibration response of fractional‐slot concentrated‐winding (FSCW) permanent magnet synchronous machines (PMSMs). However, this study reveals force at nonswitching high‐frequency band dominant source. First, characteristic 10‐slot/8‐pole FSCW PMSM described. A phenomenon revealed through acceleration, which different from traditional theory cognition. The (PM) armature flux densities are presented detail. Meanwhile, analysed. Second, effect perspective modulation effect, frequency dynamic displacement. Third, rotor skewing method adopted, effectively suppresses band. Finally, manufactured, tests on prototype machine implemented for verification.