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A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms

Lee, Youngsil; Vakil, Gaurang; Feldman, Ralph; Watson, Alan James; Wheeler, Patrick

Authors

Youngsil Lee Youngsil Lee

Gaurang Vakil ezzgv@exmail.nottingham.ac.uk

Ralph Feldman

Alan James Watson alan.watson@nottingham.ac.uk

Patrick Wheeler pat.wheeler@nottingham.ac.uk



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.

Start Date Sep 5, 2016
Publication Date Sep 5, 2016
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
APA6 Citation Lee, Y., Vakil, G., Feldman, R., Watson, A. J., & Wheeler, P. (2016). A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms. doi:10.1109/EPE.2016.7695573
DOI https://doi.org/10.1109/EPE.2016.7695573
Keywords Dual Active Bridge, high-power dc-dc converter, offshore wind farms, MVDC Grids, power loss
Publisher URL https://ieeexplore.ieee.org/document/7695573/
Related Public URLs http://www.epe2016.com/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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