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Multi‑objective Pareto and GAs nonlinear optimization approach for fyback transformer
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion. (Power electronics group)ORCID-id: 0000-0002-8379-7136
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion. (Power Electronics group)ORCID-id: 0000-0002-0208-9112
2019 (engelsk)Inngår i: Electrical engineering (Berlin. Print), ISSN 0948-7921, E-ISSN 1432-0487, Vol. 101, nr 3, s. 995-1006Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Design and optimization of high-frequency inductive components is a complex task because of the huge number of variables to manipulate, the strong interdependence and the interaction between variables, the nonlinear variation of some design variables as well as the problem nonlinearity. This paper proposes a multi-objective design methodology of a 200-W flyback transformer in continuous conduction mode using genetic algorithms and Pareto optimality concept. The objective is to minimize loss, volume and cost of the transformer. Design variables such as the duty cycle, the winding configuration and the core shape, which have great effects on the former objectives but were neglected in previous works, are considered in this paper. The optimization is performed in discrete research space at different switching frequencies. In total, 24 magnetic materials, 6 core shapes and 2 winding configurations are considered in the database. Accurate volume and cost models are also developed to deal with the optimization in the discrete research space. The bi-objective (loss–volume) and tri-objective (loss–volume–cost) optimization results are presented, and the variations of the design variables are analyzed for the case of 60 kHz. An example of a design (30 kHz) is experimentally verified. The registered efficiency is 88% at full load.

sted, utgiver, år, opplag, sider
Germany: Springer Berlin/Heidelberg, 2019. Vol. 101, nr 3, s. 995-1006
Emneord [en]
Genetic algorithms, NSGAII, Pareto front, Flyback converter, Transformer, Core loss, Winding loss
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Identifikatorer
URN: urn:nbn:se:miun:diva-37384DOI: 10.1007/s00202-019-00836-3ISI: 000498167600024Scopus ID: 2-s2.0-85074033042OAI: oai:DiVA.org:miun-37384DiVA, id: diva2:1354733
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WIRICTilgjengelig fra: 2019-09-26 Laget: 2019-09-26 Sist oppdatert: 2020-01-16bibliografisk kontrollert

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