关键词: 直驱永磁风力发电机, 模块化结构, 有限元分析, 极槽配合, 负载转矩

Abstract: The stator modular structure of permanent magnet machines is beneficial for the manufacturing, transportation, assembly, and maintenance of large machines. For machines that can be modular and have more poles than slots, the stator modular structure can also improve some of the machine ' s performance. The impact of stator modular structure on the performance of a 14-pole 12-slot permanent magnet machine was analyzed by finite element software. The results show that the modular structure has an impact on parameters such as stator magnetic density, torque, and loss. A suitable module gap width can be used to increase the machine load torque and reduce torque ripple.

Key words: direct drive permanent magnet wind generator, modular structure, finite element analysis, slot-pole combination, load torque