西门子6SE6440-2UD41-3GA1

6SE6440-2UD41-3GA1

由于在电机运行过程中转矩脉动、电磁径向力会导致电机振动，定子齿部过窄会导致定子齿部机械强度过差，从而导致定子齿部断折。

在电机定子槽型结构设计中，应使得电机定子磁路磁阻优化，定子磁路不存在磁密奇点，永磁体工作点在电机运行工况范围内位于优工作点附近。同时，定子槽型选择，应利于电机嵌线，方便电机批量化生产。

槽的深浅：一方面是看磁场从齿的部分走的面积还有鄂部的面积比例近似相当，这样保证磁场的路径从齿到鄂部的阻力一样，另外一个角度看，槽太深了会让齿的径向长度增加，从而降低了定子的圆周方向的刚度，会降低NVH性能，增加振动响应。

线型：高速和更高开关频率的代价就是电机定子铜线有高频肌肤效应，会显著的增加发热损失，有时候会比中速增加1/4损失，那么越高速，浪费的电能越多。解决方案就是在铜线总面积基本不变的基础上用很多细的线，或者是径向很扁的扁铜线来降低肌肤效应的损耗影响。

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