100 kW, 10 kHz Medium-Frequency Transformer Design Optimization and Experimental Verification

This paper describes a novel, model-based, and design optimization methodology for high-power medium-frequency transformers (MFTs) for medium-voltage high-power electronic applications, namely emerging solid-state transformers. Presented procedure enables the designer to interactively select the most optimal design in a simple and intuitive way, while inherently offering flexibility in terms of various design alternatives, depending on the component availability. The core of the design algorithm is explained in detail together with all of the relevant modeling and technical challenges associated with realization of a prototype. A 100 kW, 10 kHz MFT prototype has been designed, according to the presented algorithm, practically realized and thoroughly tested in order to verify the theoretical design.