期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 28, 期 4, 页码 2014-2023出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2012.2215054
关键词
High power; medium-voltage dc (MVDC) converter; MVDC grid; offshore wind farm
资金
- National High Technology Research and Development Program of China (863 Program) [2011AA05A107]
- ABB
- National Science Foundation [EEC-0812121]
Offshore wind farm with an internal medium-voltage dc (MVDC)-grid collection connected HVDC transmission may be an option to harvest offshore wind energy. High-power MV dc/dc converters with high-step-up conversion ratios are the key components for the internal MVDC grid. In this paper, a high-efficiency step-up resonant switched-capacitor converter for offshore wind energy system is studied, which is characterized by the soft-switching condition for all switches and diodes. This significantly reduces switching losses and higher switching frequency is feasible to reduce the overall system volume and weight. The comparisons with other two kinds of topologies are also presented; moreover, the possible specification requirements of high power MV dc/dc converters are analyzed and set. The operation principle of the proposed converter has been successfully verified by simulation and experiment results.
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