This paper deals with the design optimization of a synchronous reluctance machine to be used in an X-ray tube, where the goal is to maximize the torque, by means of gradient-based free-form shape optimization. The presented approach is based on the mathematical concept of shape derivatives and allows to obtain new motor designs without the need to introduce a geometric parametrization. We validate our results by comparing them to a parametric geometry optimization in JMAG by means of a stochastic optimization algorithm. While the obtained designs are of similar shape, the computational time used by the gradient-based algorithm is in the order of minutes, compared to several hours taken by the stochastic optimization algorithm. Finally, we show an extension of the free-form shape optimization algorithm to the case of multiple objective functions and illustrate a way to obtain an approximate Pareto front.
@article{arxiv.2010.10117,
title = {Multi-objective free-form shape optimization of a synchronous reluctance machine},
author = {Peter Gangl and Stefan Köthe and Christiane Mellak and Alessio Cesarano and Annette Mütze},
journal= {arXiv preprint arXiv:2010.10117},
year = {2026}
}
Comments
6 pages, 7 figures, proceedings to IGTE Symposium Graz 2020