@inproceedings { , title = {A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms}, abstract = {This paper presents the steady-state analysis of a high power step-up DC-DC converter based three-phase dual active bridge (3DAB) for use as a medium voltage (MV) DC-DC collector of offshore wind farms. An optimization procedure for a high-power medium frequency transformer is explained and moreover, a design of an optimal control phase shift angle is explained and verified through simulation. The comparisons with two scenarios are presented: 4MW converters for power conversion from low dc voltage (LVDC) of the wind turbine output terminal to 40kV MVDC grid of offshore wind farms. The proposed 3DAB DC-DC converter is investigated for the given scenarios in terms of losses of the semi-conductors and the magnetic part as well as the quantity of semi-conductors.}, conference = {2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe}, doi = {10.1109/EPE.2016.7695573}, isbn = {978-1-5090-1410-1}, organization = {Karlsruhe, Germany}, pages = {1-10}, publicationstatus = {Published}, url = {https://nottingham-repository.worktribe.com/output/774464}, keyword = {Dual Active Bridge, high-power dc-dc converter, offshore wind farms, MVDC Grids, power loss}, year = {2024}, author = {Lee, Youngsil and Vakil, Gaurang and Feldman, Ralph and Watson, Alan J. and Wheeler, Patrick} }