A Medium Frequency Transformer Design Tool with Methodologies Adated to Various Structures
Résumé
A complete and generic medium frequency transformer (MFT) design methodology is presented in this paper, which can be applied to many transformer structures. Models were found or developed to cover every necessary calculation, with a focus on the balance between computation time and accuracy, leading to a fast and efficient design tool. A lot of MFT designs are available at the end and the possibility to choose the best candidate is offered. A multi-megawatt offshore windfarm converter application has been chosen to show the design optimization procedure of the MFT inside such a converter. The best potential design found is then validated by numerous finite element simulations to validate the models used. This procedure is then repeated for various MFT structures in order to realize a quantitative comparison of many different technological choiceschoices' combinations. This study can give insights on the best technological choices to be used for MFT, and also shows significant differences on performances between structures.
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