Impact of Flux Barrier Shape and Design Strategy in Synchronous Reluctance Machine Optimisation
(2022) PEMD 2022 — Location: Newcastle, UK (21.June.2022)
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- Optimal design of synchronous reluctance machines involves a number of parameters and costly finite element evaluations, leading to an intrinsic high optimisation time. To lower it, both the design space and the design approach can be adapted. In this study, the impact on the total optimisation time and achievable performance of four rotor geometries and two design approaches is investigated. The four geometries of interests are rotors having round or Joukowski flux barriers, with or without cut-off barrier. The first design approach consists in carrying a single optimisation to maximise the mean torque while constraining the torque ripple and the local von mises stresses. The second consists in optimising successively the flux barriers for the magnetic performance with an analytical pre-dimensioning of the radial ribs, and then the ribs for the structural integrity. Results show no significant difference in the mean torque and optimisation time between the geometries when carrying a single optimisation. Also, carrying successive optimisations lead to the same performance. While the total optimisation time is not significantly reduced for round flux barriers with this last approach, it can be divided by up to four when using Joukowski flux barriers, regardless of the presence of a cut-off barrier.
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De Gréef, C., Kluyskens, V., & Dehez, B. (2022). Impact of Flux Barrier Shape and Design Strategy in Synchronous Reluctance Machine Optimisation. PEMD 2022, Newcastle, UK. https://hdl.handle.net/2078.5/104540