Time-Efficient Multi-Physics Optimization Approaches for the Design of Synchronous Reluctance Motors

C. De Gréef, V. Kluyskens, F. Henrotte, C. Versèle, C. Geuzaine, B. Dehez
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引用次数: 1

Abstract

The design of synchronous reluctance machines involves a multiphysics optimization with a consequent number of design parameters. To lower the optimization time, it is common to split the problem into subproblems, i.e., to optimize successively the flux barriers for the electromagnetic performance, and then the ribs for the structural integrity of the rotor. This however leads in general to a suboptimal design, because the cross-coupling between design parameter subsets (e.g., magnetic and mechanical) is this way ignored. In this study, different splitting optimization strategies have been implemented and evaluated by comparing not only the electromagnetic performance reached by the optimized designs, but also the computation time. Results show that the optimization time can indeed be significantly lowered by performing a magnetic optimization followed by a mechanical optimization, with little impact on the mean torque output. Pre-dimensioning analytically the radial ribs within the magnetic optimization further reduces the optimization time and improves the performance of the design. Finally, performing an additional iteration on the approach leads to a mean torque and torque ripple very close to the ones obtained by carrying the global optimization, with however half the optimization time.
同步磁阻电机设计的多物理场优化方法
同步磁阻电机的设计涉及一个多物理场优化问题,其设计参数随之增多。为了缩短优化时间,通常将问题分解为子问题,即依次优化电磁性能方面的磁障,再优化转子结构完整性方面的肋。然而,这通常会导致次优设计,因为设计参数子集(例如,磁性和机械)之间的交叉耦合被忽略了。在本研究中,实现了不同的分裂优化策略,并通过比较优化设计所达到的电磁性能和计算时间进行了评价。结果表明,先进行磁力优化再进行机械优化确实可以显著缩短优化时间,对平均转矩输出影响很小。在磁力优化中对径向肋进行预尺寸分析,进一步缩短了优化时间,提高了设计性能。最后,对该方法进行额外迭代,得到的平均转矩和转矩脉动与进行全局优化得到的转矩和转矩脉动非常接近,但优化时间缩短了一半。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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