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In this paper, the usefulness of the three-dimensional finite element method with prismatic edge elements for the electromagnetic field analysis of a separate-type transformer with a thin core is clarified. The effects of the core division on the efficiency are clarified quantitatively. As a result, using prismatic edge elements, the eddy current can be calculated correctly even if there are the thin elements. In addition, the calculated current is almost the same as the measured one. The eddy current loss becomes smaller as the number of the core divisions increases.

nihon aem gakkaishi

Electromagnetic Field Analysis of Separate-Type Transformer Connected to Non-Contact Battery Charger Using 3-D Finite Element Method with Prismatic Edge Elements