In this article the sensitivity of manufacturing tolerances on the output of a permanent magnet synchronous machine with stator segmentation is studied. To reduce the simulation effort, a transition of the stator segment air gaps to replacement geometry was applied and the relevant parameters are discussed, whereas the uncertainty of geometric and material parameters is modeled with a normal distribution. Furthermore, tolerance chains are expressed through the convolution of independent probability distributions. For the Design of Experiments Sobol sequences are utilized. To further decrease the number of design parameters an approach is presented to reduce redundant parameters to individual design parameters. For the sensitivity analysis the torque and torque ripple serve as quality objectives. In addition, an approach is revealed to use the variance of the radial forces as quality objective without considering mechanical FE simulations. For manufacturing tolerances a linear regression is satisfying to describe the main effects on the quality objectives. Repetitive machine parameters, e.g. the remanences, have less influence on the machine's output than particular parameters such as the housing radius or static eccentricity. The influences of stator segmentation are negligibly small, whereas the housing radius has the highest sensitivity on the machine's output.

中文翻译：

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带定子分段的永磁同步电机制造公差的敏感性分析

在本文中，研究了制造公差对带定子分段的永磁同步电机输出的敏感性。为了减少模拟工作量，应用了定子段气隙到替换几何形状的过渡，并讨论了相关参数，而几何和材料参数的不确定性用正态分布建模。此外，公差链是通过独立概率分布的卷积来表示的。对于实验设计，使用 Sobol 序列。为了进一步减少设计参数的数量，提出了一种将冗余参数减少到单个设计参数的方法。对于灵敏度分析，转矩和转矩脉动作为质量目标。此外，揭示了一种使用径向力的方差作为质量目标而不考虑机械有限元模拟的方法。对于制造公差，线性回归可以满足描述对质量目标的主要影响。与特定参数（例如外壳半径或静态偏心距）相比，重复的机器参数（例如剩磁）对机器输出的影响较小。定子分段的影响小到可以忽略不计，而外壳半径对机器输出的敏感性最高。与外壳半径或静态偏心率等特定参数相比，对机器输出的影响较小。定子分段的影响小到可以忽略不计，而外壳半径对机器输出的敏感性最高。与外壳半径或静态偏心率等特定参数相比，对机器输出的影响较小。定子分段的影响小到可以忽略不计，而外壳半径对机器输出的敏感性最高。