Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer
Multi-megawatt scale isolated DC-DC converters are likely to become increasingly popular as means to interconnect the MVDC grids of different voltage levels. Threephase dual active bridge DC-DC (3DAB) converters operating with the zero-voltage switching (ZVS) is a promising candidate for the target...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
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2017
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| Online Access: | https://eprints.nottingham.ac.uk/50596/ |
| _version_ | 1848798292174962688 |
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| author | Lee, Youngsil Watson, Alan James Vakil, Gaurang Wheeler, Patrick |
| author_facet | Lee, Youngsil Watson, Alan James Vakil, Gaurang Wheeler, Patrick |
| author_sort | Lee, Youngsil |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Multi-megawatt scale isolated DC-DC converters are likely to become increasingly popular as means to interconnect the MVDC grids of different voltage levels. Threephase dual active bridge DC-DC (3DAB) converters operating with the zero-voltage switching (ZVS) is a promising candidate for the target multi-megawatt application. This paper presents a systematic approach of the design considerations for a 3DAB converter. Firstly, the use of snubber capacitors in medium voltage and medium frequency operating conditions is proposed. Snubber capacitor influence on turn-off current levels and ZVS operating range are introduced and analyzed. In addition, details of thermal management design are introduced. It is established through power loss analysis that the proposed design method reduces the semiconductor losses substantially at full load conditions. Finally, the proposed method has been validated from a 10kW simulation model using PLECS software package. |
| first_indexed | 2025-11-14T20:17:27Z |
| format | Conference or Workshop Item |
| id | nottingham-50596 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:17:27Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-505962020-05-04T19:09:22Z https://eprints.nottingham.ac.uk/50596/ Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer Lee, Youngsil Watson, Alan James Vakil, Gaurang Wheeler, Patrick Multi-megawatt scale isolated DC-DC converters are likely to become increasingly popular as means to interconnect the MVDC grids of different voltage levels. Threephase dual active bridge DC-DC (3DAB) converters operating with the zero-voltage switching (ZVS) is a promising candidate for the target multi-megawatt application. This paper presents a systematic approach of the design considerations for a 3DAB converter. Firstly, the use of snubber capacitors in medium voltage and medium frequency operating conditions is proposed. Snubber capacitor influence on turn-off current levels and ZVS operating range are introduced and analyzed. In addition, details of thermal management design are introduced. It is established through power loss analysis that the proposed design method reduces the semiconductor losses substantially at full load conditions. Finally, the proposed method has been validated from a 10kW simulation model using PLECS software package. 2017-10-01 Conference or Workshop Item PeerReviewed Lee, Youngsil, Watson, Alan James, Vakil, Gaurang and Wheeler, Patrick (2017) Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer. In: 2017 IEEE Energy Conversion Congress and Exposition (ECCE), 1-5 October 2017, Cincinnatti, Ohio, USA. Dual active bridge DC-DC snubber capacitor thermal management power losses ZVS MVDC http://ieeexplore.ieee.org/document/8096777/ |
| spellingShingle | Dual active bridge DC-DC snubber capacitor thermal management power losses ZVS MVDC Lee, Youngsil Watson, Alan James Vakil, Gaurang Wheeler, Patrick Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer |
| title | Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer |
| title_full | Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer |
| title_fullStr | Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer |
| title_full_unstemmed | Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer |
| title_short | Design considerations for a high-power dual active bridge DC-DC converter with galvanically isolated transformer |
| title_sort | design considerations for a high-power dual active bridge dc-dc converter with galvanically isolated transformer |
| topic | Dual active bridge DC-DC snubber capacitor thermal management power losses ZVS MVDC |
| url | https://eprints.nottingham.ac.uk/50596/ https://eprints.nottingham.ac.uk/50596/ |