Tuesday March 15, 2022 at 2:00 PM CET, 8:00 AM EST

By Shafigh Nategh (Polestar, Sweden) and Yves Thioliere (Powersys, France)

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Multi-objective multi-constraint optimization is required for the design of high-performance electrical appliances because of their need to satisfy a multitude of requirements. Optimization issues such as these perform searches within small and complex regions (design spaces that satisfy all constraints). Multipoint searches such as genetic algorithms (GA) are useful as search methods, but there exists the issue of calculation amounts increasing significantly in size. Pre-processing occurs in the form of narrowing down the design spaces as so to reduce these calculation amounts. However, depending on the way in which this narrowing down takes place, there exists the importance of factors such as experiences, making personal judgements, or risk of those narrowing-down processes not being carried out correctly.

Presenters’ bio:

Shafigh Nategh (Senior Member, IEEE) was born in 1984. He received the B.Sc. and M.Sc. degrees in electric power engineering from Shahid Chamran University, Ahvaz, Iran, in 2006 and 2008, respectively, and the Ph.D. degree in electric power engineering from the KTH Royal Institute of Technology, Stockholm, Sweden, in 2013. He was a Visiting Scholar with the University of Illinois at Urbana-Champaign, Urbana, IL, USA, from 2012 to 2013. From 2013 to 2015, he was a Lead Designer of PM machines for marine segment with the Rolls-Royce Group, Trondheim, Norway. He continued his career as a Designer of traction motors for railway applications with Bombardier Transportation, Västerås, Sweden, from 2015 to 2018. He was an R&D Senior Engineer with E-mobility Department, ABB AB, Västerås, Sweden, in 2018–2020, and Principal Engineer with Volvo Cars, Göteborg, Sweden, in 2020-2022. He is currently a Senior Principal Engineer with Polestar, Göteborg, Sweden, as well as an Adjunct Associate Professor with the Chalmers University of Technology, Gothenburg, Sweden. Dr. Nategh is a Secretary of Electrical Machines Technical Committee, IES-IEEE. His research interests include different aspects of electromagnetic, thermal, and insulation design of traction motors in marine, aerospace, railway, and e-mobility applications.

Yves Thioliere was born in 1981 and received his master and engineer degree from the ENSIEG in Grenoble. Currently, he is working as Electromagnetic simulation engineer at Powersys SARL since January 2007. In charge of the overall support of EU customer using JMAG software developed by JSOL corporation in Japan. In addition, he has given numerous customer trainings, webinars and conducted various simulation studies.