Abstract：In renewable hybrid power generation system, the existing multi-input DC-DC converters (MIC) cannot meet working performances requirements well, such as power supply modes, high voltage-gain, small ripples, low component voltage stresses, high efficiency and so on. Therefore, based on switched-capacitor network group, two novel double-input step-up converter topologies including the parallel-form and the serial-form are given. Operation principles and working performances of the two converters are analyzed in detail. In addition, experimental researches have been implemented to verify the correctness and the feasibility of the two circuit topologies.
[1] Taufik M,Taufik T,Wong T.Multiple-input single-output converter for renewable energy sources[C].IEEE Symposium on Industrial Electronics and Applications,Bandung,Indonesia,2012:130-135. [2] Noroozian R,Abedi M,Gharehpetian G B,et al.On-grid and off-grid operation of multi-Input single-output DC/DC converter based fuel cell generation system[C].18th Iranian Conference on Electrical Engineering,Isfahan,Iran,2010:753-758. [3] Zhao R,Yu S Y,Kwasinski A.Technological assessment of DC-DC multiple-input converters as an interface for renewable energy applications[C].International Conference on Renewable Energy Research and Applications,Nagasaki,2012:1-6. [4] Liu Y C,Chen Y M.A systematic approach to synthesizing multi-input DC-DC converters[J].IEEE Transactions on Power Electronics,2009,24(1):116-127. [5] Khaligh A,Cao J,Lee Y J.A multiple- input DC-DC converter topology[J].IEEE Transactions on Power Electronics,2009,24(3):862-868. [6] Kwasinski A.Identification of feasible topologies for multiple-input DC-DC converters[J].IEEE Transactions on Power Electronics,2009,24(3):856-861. [7] 李艳,阮新波,杨东升,等.带缓冲单元的多输入直流变换器电路拓扑[J].电工技术学报,2009,24(6):62-68. Li Yan,Ruan Xinbo,Yang Dongsheng,et al.Multiple- input DC/DC converters with buffer cells[J].Transactions of China Electrotechnical Society,2009,24(6):62-68. [8] 李艳,阮新波,杨东升,等.无缓冲单元的多输入直流变换器电路拓扑[J].电工技术学报,2009,24(5):73-79. Li Yan,Ruan Xinbo,Yang Dongsheng,et al.Multiple-input DC/DC converters without buffer cells[J].Transactions of China Electrotechnical Society,2009,24(5):73-79. [9] 李艳,阮新波,杨东升.一种新的双输入直流变换器[J].电工技术学报,2008,23(6):77-82. Li Yan,Ruan Xinbo,Yang Dongsheng.A new double-input DC-DC converter[J].Transactions of China Electrotechnical Society,2008,23(6):77-82. [10]陆治国,刘捷丰,郑路遥,等.新型双输入Boost变换器[J].电力自动化设备,2010,30(9):42-45. Lu Zhiguo,Liu Jiefeng,Zheng Luyao,et al.Double-input boost converter[J].Electric Power Automation Equipment,2010,30(9):42-45. [11]王勤,阮新波,周晨,等.单一次绕组电压源型全桥多输入变换器[J].电工技术学报,2013,28(2):205-211. Wang Qin,Ruan Xinbo,Zhou Chen,et al.Single-primary-winding voltage-fed multiple-input full-bridge converter[J].Transactions of Chinese Electrotechnical Society,2013,28(2):205-211. [12]杨东升,阮新波,李艳,等.一种新的多输入全桥变换器[J].电工技术学报,2011,26(8):24-32. Yang Dongsheng,Ruan Xinbo,Li Yan,et al.A new multiple-input full bridge converter[J].Transactions of China Electrotechnical Society,2011,26(8):24-32. [13]陈道炼,陈亦文,徐志望.全桥Boost型多输入直流变换器[J].中国电机工程学报,2010,30(27):42-48. Chen Daolian,Chen Yiwen,Xu Zhiwang.Full-bridge boost mode multiple-input DC-DC converters[J].Proceedings of the CSEE,2010,30(27):42-48. [14]刘福鑫,阮洁,阮新波,等.采用交变脉冲电源单元的隔离型多输入直流变换器[J].电工技术学报,2012,27(7):174-183. Liu Fuxin,Ruan Jie,Ruan Xinbo,et al.Isolated multiple input DC-DC converter using alternative pulsating source as building cells[J].Transactions of China Electrotechnical Society,2012,27(7):174-183. [15]欧阳静,洪峰,王成华,等.一种新型输出并联型双Boost逆变器[J].电工技术学报,2011,26(1):130-135. Ou Yangjing,Hong Feng,Wang Chenghua,et al.Research on a novel output-parallel dual-boost inverter[J].Transactions of China Electrotechnical Society,2011,26(1):130-135. [16]罗全明,闫欢,孙明坤,等.基于拓扑组合的高增益Boost变换器[J].电工技术学报,2012,27(6):96-102. Luo Quanming,Yan Huan,Sun Mingkun,et al.High step-up boost converter based on topology combin- ation[J].Transactions of China Electrotechnical Society,2012,27(6):96-102. [17]罗全明,邾玢鑫,周雒维,等.一种多路输入高升压 Boost变换器[J].中国电机工程学报,2012,32(3):9-14. Luo Quanming,Zhu Binxin,Zhou Luowei,et al.High step-up boost converter with multiple-input[J].Proceedings of the CSEE,2012,32(3):9-14. [18]侯世英,陈剑飞,孙韬,等.基于Switch-Capacitor网络实现分时供电的多输入升压变换器[J].电工技术学报,2014,29(4):27-37. Hou Shiying,Chen Jianfei,Sun Tao,et al.A multi-input step-up converter for individual supplying power based on the switch-capacitor network[J].Transactions of China Electrotechnical Society,2014,29(4):27-37.
2015, Vol. 30 
