Engineering concerns of optiminal realization for a medium frequency transformer in traction power electronic transformers

Abstract

In order to further improve the efficiency and power density of traction power electronic transformers (PET), this paper proposes an optimized design engineering scheme that comprehensively considers geometric constraints, insulation constraints and heat dissipation constraints for the isolation medium frequency transformer, the key components of PET. The scheme uses Pareto fronts, which can obtain the compromise optimization point of the transformer’s volume and efficiency. The paper focuses on engineering correction of systematic errors introduced by the transformer engineering implementation process. The engineering correction includes geometric correction and electromagnetic correction. The static measurement result of the built prototype show that the engineering correction can significantly improve the accuracy of the model of transformer.