Topology optimization of multiple-barrier synchronous reluctance motors with initial random hollow circles

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Multiple air barriers and iron webs of the synchronous reluctance motor (SynRM) are vital to achieving higher average torque and a lower ripple torque. However, it is challenging to determine the optimum multiple barriers because the optimization results are significantly affected by the initial flux path and moreover are sensitive to a penalization scheme in the topology optimization. Interestingly, in nature, the hollow circular patterns of the trabecular bone at infancy gradually adapt to the optimal (also very complicated) trabecular architecture, which provides a characteristic lightweight design. Inspired by the above observation, this study proposed a novel topology optimization for multiple-barrier SynRMs, which initially started from random hollow circles. To distinguish between iron and air, the dq-axis-dependent penalization scheme is also proposed instead of a conventional spatially constant penalization scheme. Using the adjoint variable method, the analytical sensitivity was derived to consider a nonlinear B-H curve in the topology optimization. By optimizing various SynRMs with different filtering radii, this study investigated the relationship between multiple barriers and motor performance.
Publisher
SPRINGER
Issue Date
2021-10
Language
English
Article Type
Article
Citation

STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, v.64, no.4, pp.2213 - 2224

ISSN
1615-147X
DOI
10.1007/s00158-021-02976-2
URI
http://hdl.handle.net/10203/288173
Appears in Collection
GT-Journal Papers(저널논문)
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