Design Trade-Off Analysis of Dry-Type Medium Frequency Transformers with Parallel Foil Windings

Abstract

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A Comparative Study of Finite Element Method and Hybrid Finite Element Method–Spectral Element Method Approaches Applied to Medium-Frequency Transformers with Foil Windings

“…On the other hand, foil conductors offer a comparatively higher power density, which can be optimized to improve the cost efficiency in high-power MFT designs. In a previous work [4], the use of parallel foil conductors was proposed, thereby aiming to enhance cost-efficiency and achieve robust thermal and electric operation. However, the concentration of the current density in the corners of the rectangular foil cross-sections introduced additional eddy losses in the winding cross-sections [5].…”