The mechanical optimization is critical for the high-speed permanent magnet synchronous machine (HSPMSM) due to its high-speed operating condition. The sensitivity analysis is necessary to improve mechanical strength and stiffness since various influencing factors. This paper presents a mechanical multiobjective optimal design of HSPMSM based on parametric sensitivity analysis. The parameters with marked influence on the rotor stress and critical speed are selected as the design variables: including the material properties, length-diameter ratio, interference size, and bearing stiffness. The parametric sensitivity analysis is performed to provide the influencing magnitude and trend of each parameter. And the best combination of variable levels could be determined. The result shows the performance of the optimized design is improved greatly, which verifies the validity of the proposed optimization method. The sensitivity analysis of each influencing parameter provides guidance for HSPMSM efficient optimization.

中文翻译：

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高速永磁同步电机机械参数灵敏度分析


由于高速永磁同步电机（HSPMSM）的高速运行条件，机械优化至关重要。由于影响因素较多，因此需要进行敏感性分析以提高机械强度和刚度。本文提出了一种基于参数敏感性分析的HSPMSM机械多目标优化设计。选择对转子应力和临界转速影响显着的参数作为设计变量：包括材料特性、长径比、过盈尺寸和轴承刚度。进行参数敏感性分析以提供每个参数的影响大小和趋势。并且可以确定变量水平的最佳组合。结果表明优化设计的性能得到了很大的提高，验证了所提优化方法的有效性。各影响参数的敏感性分析为HSPMSM高效优化提供指导。