相比于一般电机，大型潜水感应电机目前存在电磁噪声过大的问题。采用径向斜槽结构可以削弱大型潜水电机的电磁噪声，但仍存在部分不足。基于径向斜槽结构，通过调整径向斜槽扭斜距离进一步削弱电磁噪声，并提高电机其他性能。利用多物理场耦合有限元仿真分析对比各方案的电磁噪声，验证了上述方法的正确性。

Compared with general motors, the large-scale submersible induction motor currently has the problem of excessive electromagnetic noise. The electromagnetic noise of largescale submersible motors can be reduced by using a radial skewed slot structure, but there are still some deficiencies. Based on the radial skewed slot structure, the electromagnetic noise is further weakened and other performances of the motor are improved by adjusting the twisting distance of the radial skewed slot. The electromagnetic noise of each scheme is analyzed and compared by using the multiphysical field coupling finite element simulation, and the correctness of the above method is verified.

国家自然科学基金项目(51977055);安徽省科技重大专项项目(201903a05020042)