Abstract：In this paper,a three-port DC-DC converter is proposed to meet the requirements of the hybrid renewable energy generation.The introduced topology has the advantages of electric isolation,soft-switching operation,and small input current ripple.The T/Δ equivalent transformation for the three-winding transformer is carried out to derive the unified expression for transformer’s power and RMS current expressions under five different operation modes.Then the general expression within all working conditions are obtained,which can simplify the circuit analysis and design complexity.The topology is proved to be with good soft switching characteristic by analyzing the operation range of soft switching.Finally,a 2.5 kW prototype is made and the experiments are conducted to verify the working modes with wide voltage input and the soft switching characteristics.The results prove the correctness of the theoretical analysis.
宋 鑫,肖建国,牛洁茹,李武华,孙宏伟. 一种用于新能源混合发电的移相控制三端口DC-DC变流器[J]. 电工技术学报, 2015, 30(17): 36-44.
Song Xin,Xiao Jianguo,Niu Jieru,Li Wuhua,Sun Hongwei. A Three-port DC-DC Converter with Phase Shift Control for the Hybrid Renewable Energy Generation System. Transactions of China Electrotechnical Society, 2015, 30(17): 36-44.
[1] 张君君,吴红飞,曹锋,等.一种非隔离双向三端口升降压变换器[J].电机工程学报,2014,34(33):5861-5867. Zhang Junjun,Wu Hongfei,Cao Feng,et al.A non-isolated bidirectional three-port Buck-Boost converter[J].Proceeding of the CSEE,2014,34(33):5861-5867. [2] 刘福鑫,阮洁,阮新波.一种多端口直流变换器的系统生成方法-采用单极性脉冲电源单元[J].中国电机工程学报,2012,32(26):72-80. Liu Fuxin,Ruan Jie,Ruan Xinbo.A systematic approach to synthesize multi-port DC/DC converters-adopting unipolar pulsating source cells[J].Proceedings of the CSEE,2012,32(26):72-80. [3] 张犁,孙凯,吴田进,等.基于光伏发电的直流微网能量变换和管理[J].电工技术学报,2014,28(2):248-254. Zhang Li,Sun Kai,Wu Tianjin,et al.Energy conversion and management for DC microgrid based on photovoltaic generation[J].Transactions of China Electrotechnical Society,2014,28(2):248-254. [4] 周林,黄勇,郭珂,等.微电网储能技术研究综述[J].电力系统保护与控制,2011,39(7):147-152. Zhou Lin,Huang Yong,Guo Ke,et al.A survey of energy storage technology for micro grid[J].Power System Protection and Control,2011,39(7):147-152. [5] 田慧雯,李咸善,陈铁,等.基于混合储能的光伏微网孤网运行的综合控制策略[J].电力系统保护与控制,2014,42(19):122-128. Tian Huiwen,Li Xianshan,Chen Tie,et al.Comprehensive control strategy of hybrid energy storage-based photovoltaic island microgrid[J].Power System Protection and Control,2014,42(19):122-128. [6] Wang Lei,Wang Zhan,Li Hui.Asymmetrical duty cycle control and decoupled power flow design of a three-port bidirectional DC-DC converter for fuel cell vehicle application[J].IEEE Transactions on Power Electronics,2012,27(2):891-904. [7] Chen Y M,Liu Y C,Lin S H.Double-input PWM DC/DC converter for high/low voltage sources[C].The 25th International Telecommunications Energy Conference,Yokohama,Japan,2003:27-32. [8] Wu Hongfei,Sun Kai,Ding Shun,et al.Topology derivation of nonisolated three-port DC-DC converters from DIC and DOC[J].IEEE Transactions on Power Electron,2013,28(7):3297-3307. [9] Qian Zhijun,Abdel-Rahman O,Al-Atrash H,et al.Modeling and control of three-port DC/DC converter interface for satellite applications[J].IEEE Transactions on Power Electron,2010,25(3):637-649. [10]Liu Y C,Chen Y M.A systematic approach to synthesizing multi-input DC-DC converters[C].IEEE Power Electronics Specialists Conference,Orlando,FL,2007:2626-2632. [11]李艳,郑琼林,陈嘉垚,等.带解耦控制的三输入直流变换器建模及调节器设计[J].电工技术学报,2013,28(4):109-118. Li Yan,Zheng Qionglin,Chen Jiayao,et al.Modeling and regulator design for three-input DC-DC converter with decoupling control[J].Transactions of China Electrotechnical Society,2013,28(4):109-118. [12]Zhao Chuanhong,Round S D,Kolar J W.An isolated three-port bidirectional DC-DC converter with decoupled power flow management[J].IEEE Transactions on Power Electronics,2008,23(5):2443-2453. [13]Tao Haimin,Duarte J L,Hendrix M A M.Novel zero-voltage switching control methods for a multiple-input converter interfacing a fuel cell and supercapacitor[C].32nd Annual Conference on IEEE Industrial Electronics,Paris,2006:2341-2346. [14]Li Wuhua,Xiao Jianguo,Zhao Yi,et al.PWM plus phase angle shift (PPAS) control scheme for combined three-port DC/DC converters[J].IEEE Transactions on Power Electron,2012,27(3):1479-1489. [15]Wu Hongfei,Xu Peng,Hu Haibing,et al.Multiple converters based on integration of full-bridge and bidirectional DC-DC topologies for renewable generation systems[J].IEEE Transactions on Industrial Electronics,2014,61(2):856-869.
2015, Vol. 30 
