Design Methodology and Optimization of a Medium-Frequency Transformer for High-Power DC–DC Applications
Journal article, 2016

The medium-frequency power transformer (MFPT) is one of the key elements of an isolated bi-directional dc–dc converters in applications such as future all-dc offshore wind farms, traction, and solid state transformers. This paper describes a design methodology taking into account loss calculation, isolation requirements, and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a design example to find the highest power density while the efficiency, isolation, thermal, and leakage inductance requirements are all met.

DC-DC converter

High-power density

Medium-frequency transformer


Amin Bahmani

Chalmers, Energy and Environment, Electric Power Engineering

Torbjörn Thiringer

Chalmers, Energy and Environment, Electric Power Engineering

Mohammad Kharezy

SP Sveriges Tekniska Forskningsinstitut AB

IEEE Transactions on Industry Applications

0093-9994 (ISSN)

Vol. 52 5 4225-4233

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering



More information

Latest update