Carrasco J M,Franquelo L G,Bialasiewicz J T,et al.Power-electronic systems for the grid integration of renewable energy sources:a survey[J].IEEE Transactions on Industrial Electronics,2006,53(4):1002-1016.
[2]
Kawaguchi T,Sakazaki T,Isobe T,et al.Offshore-wind-farm configuration using diode rectifier with MERS in current link topology[J].IEEE Transactions on Industrial Electronics,2013,60(7):2930-2937.
[3]
Yin H,Fan L.Modeling and control of DFIG-based large offshore wind farm with HVDC-link integration[C]//North American Power Symposium (NAPS).Starkville,Mississippi:IEEE,2009:1-5.
[4]
Nishikata S,Tatsuta F.A new interconnecting method for wind turbine/generators in a wind farm and basic performances of the integrated system[J].IEEE Transactions on Industrial Electronics,2010,57(2):468-475.
[5]
Lee H J,Sul S K.Wind power collection and transmission with series connected current source converters[C]//Proceedings of the 2011-14th European Conference on Power Electronics and Applications (EPE 2011).Birmingham:IEEE,2011:1-10.
[6]
Veilleux E,Lehn P W.Interconnection of direct-drive wind turbines using a distributed HVDC converter station[C]//35th Annual Conference of IEEE on Industrial Electronics (IECON'09).Porto:IEEE,2009:584-589.
[7]
Mogstad A B,Molinas M,Olsen P K,et al.A power conversion system for offshore wind parks[C]//34th Annual Conference of IEEE on Industrial Electronics (IECON 2008).Orlando,FL:IEEE,2008:2106-2112.
[8]
Garces A,Molinas M.A study of efficiency in a reduced matrix converter for offshore wind farms[J].IEEE Transactions on Industrial Electronics,2012,59(1):184-193.
[9]
Holtsmark N,Bahirat H J,Molinas M,et al.An all-DC offshore wind farm with series-connected turbines:an alternative to the classical parallel AC model?[J].IEEE Transactions on Industrial Electronics,2013,60(6):2420-2428.
[10]
Jovcic D.Offshore wind farm with a series multiterminal CSI HVDC[J].Electric Power Systems Research,2008,78(4):747-755.
[11]
Chuangpishit S,Tabesh A,Moradi-Shahrbabak Z,et al.Topology design for collector systems of offshore wind farms with pure DC power systems[J].IEEE Transactions on Industrial Electronics,2014,61(1):320-328.
[12]
Johnson M H,Aliprantis D C,Chen H.Offshore wind farm with DC collection system[C]//Power and Energy Conference at Illinois (PECI).Champaign,IL:IEEE,2013:53-59.
[13]
Meyer C,Hoing M,Peterson A,et al.Control and design of DC grids for offshore wind farms[J].IEEE Transactions on Industry Applications,2007,43(6):1475-1482.
[14]
Monjean P,Delanoe J,Marin D,et al.Control strategies of DC-based offshore wind farm[C]//Proceedings of the 2011-14th European Conference on Power Electronics and Applications (EPE 2011).Birmingham:IEEE,2011:1-9.
[15]
Muyeen S M,Al-Durra A,Tamura J.Transmission of bulk power from DC-based offshore wind farm to grid through HVDC system[M].London:Springer London,2012:501-520.
[16]
Jovcic D.Bidirectional,high-power DC transformer[J].IEEE Transactions on Power Delivery,2009,24(4):2276-2283.
[17]
Max L,Lundberg S.System efficiency of a DC/DC converter-based wind farm[J].Wind Energy,2008,11(1):109-120.
[18]
Zhou Y,Macpherson D E,Blewitt W,et al.Comparison of DC-DC converter topologies for offshore wind-farm application[C]//6th IET International Conference on Power Electronics,Machines and Drives (PEMD 2012).Bristol:IET,2012:1-6.
[19]
Jovcic D.Step-up DC-DC converter for megawatt size applications[J].IET Power Electronics,2009,2(6):675-685.
[20]
Robinson J,Jovcic D,Joós G.Analysis and design of an offshore wind farm using a MVDC grid[J].IEEE Transactions on Power Delivery,2010,25(4):2164-2173.
[21]
Jovcic D,Ooi B T.High-power, resonant DC/DC converter for integration of renewable sources[C]// PowerTech.Bucharest:IEEE,2009:1-6.
[22]
Jovcic D,Wu B.Fast fault current interruption on high-power DC networks[C]//Power and Energy Society General Meeting.Minneapolis,MN:IEEE,2010:1-6.
[23]
Chen W,Huang A,Li C,et al.A high efficiency high power step-up resonant switched-capacitor converter for offshore wind energy systems[C]//Energy Conversion Congress and Exposition (ECCE).Raleigh,NC:IEEE,2012:235-239.
[24]
Chen W,Huang A Q,Li C,et al.Analysis and comparison of medium voltage high power DC/DC converters for offshore wind energy systems[J].IEEE Transactions on Power Electronics,2013,28(4):2014-2023.
[25]
Parastar A,Seok J K.High-gain resonant switched-capacitor cell-based DC/DC converter for offshore wind energy systems[J].IEEE Transactions on Power Electronics,2015,30(1):644-656.
[26]
Chen W,Ruan X,Yan H,et al.DC/DC conversion systems consisting of multiple converter modules:stability,control,and experimental verifications[J].IEEE Transactions on Power Electronics,2009,24(6):1463-1474.
[27]
Sano K,Takasaki M.A boost conversion system consisting of multiple DC-DC converter modules for interfacing wind farms and HVDC transmission[C]//Energy Conversion Congress and Exposition (ECCE).Denver,CO :IEEE,2013:2613-2618.
[28]
Denniston N,Massoud A,Ahmed S,et al.Multiple-module high-gain high-voltage DC-DC transformers for offshore wind energy systems[J].IEEE Transactions on Industrial Electronics,2011,58(5):1877-1886.
[29]
Aboushady A A,Ahmed K H,Williams B W.Compact multi-modular design of high power DC/DC resonant converters for offshore wind energy HVDC transmission[C]//39th Annual Conference of the IEEE on Industrial Electronics Society(IECON 2013).Vienna:IEEE,2013:5236-5241.
[30]
Meyer C.Key components for future offshore DC grids[D].Germany:RWTH Aachen University,2007.
[31]
Meyer C,De Doncker R W.Design of a three-phase series resonant converter for offshore DC grids[C]//Industry Application Conference (42nd IAS Annual Meeting).New Orleans,LA:IEEE,2007:216-223.
[32]
Chen Wu,Wang Guangjiang,Zhu Xu.A family of bidirectional DC/DC converters suitable for asymmetrical power flow requirement[C]//Energy Conversion Congress and Exposition (ECCE 2013).Denver,CO:IEEE,2013:4878-4881.
Kenzelmann S,Rufer A,Dujic D,et al.A versatile DC/DC converter based on modular multilevel converter for energy collection and distribution[C]//IET Conference on Renewable Power Generation (RPG 2011).Edinburgh:ET,2011:1-6.
[36]
Kenzelmann S.Modular DC/DC converter for DC distribution and collection networks[D].Switzerland:École Polytechnique Fédérale De Lausanne,2012.
[37]
Hagar A.A new family of transformerless modular DC-DC converters for high power applications[D].Canada:University of Toronto,2011.
[38]
Barker C D,Davidson C C,Trainer D R,et al.Requirements of DC-DC converters to facilitate large DC grids[C]//Proceedings of CIGRE Symposium.Kansas:CIGRE,2012:B4-204.
[39]
Ferreira J A.The multilevel modular dc converter[J].IEEE Transactions on Power Electronics,2013,28(10):4460-4465.
[40]
Engel S,Stieneker M,Soltau N,et al.Comparison of the modular multilevel DC converter and the dual-active bridge converter for power conversion in HVDC and MVDC grids[J].IEEE Transactions on Power Electronics,2015,30(1):124-137.
[41]
Deng F,Chen Z.An offshore wind farm with DC grid connection and its performance under power system transients[C]//Power and Energy Society General Meeting.San Diego,CA:IEEE,2011:1-8.
[42]
Yang J,Fletcher J E,O'Reilly J.Multiterminal DC wind farm collection grid internal fault analysis and protection design[J].IEEE Transactions on Power Delivery,2010,25(4):2308-2318.
[43]
Deng F,Chen Z.Operation and control of a DC-grid offshore wind farm under DC transmission system faults[J].IEEE Transactions on Power Delivery,2013,28(3):1356-1363.
[44]
Deng F,Chen Z.Design of protective inductors for HVDC transmission line within DC grid offshore wind farms[J].IEEE Transactions on Power Delivery,2013,28(1):75-83.
[45]
Max L.Design and control of a DC collection grid for a wind farm[D].Sweden:Chalmers University of Technology,2009.
[46]
Lundberg S.Evaluation of wind farm layouts[J].EPE Journal,2006,16(1):14.
[47]
Lundberg S.Wind farm configuration and energy efficiency studies:series DC versus AC layouts[D].Sweden:Chalmers University of Technology,2006.