Input Voltage Sharing Control Strategy for ISOP Converter without Interconnection Based on Positive Output Voltage Gradient Method
Chen Wu1, Wang Guangjiang1, Ruan Xinbo2
1. Jiangsu Provincial Key Laboratory of Smart Grid Technology & Equipment Southeast University Nanjing 210096 China 2. Nanjing University of Aeronautics and Astronautics Nanjing 210016 China
Abstract：Input-series and output-parallel(ISOP) converter is very suitable for high input-voltage, low output-voltage and high output-current applications. Input voltage sharing and output current sharing of the constituent modules among the ISOP converter must be ensured. The existing input voltage sharing control strategies have the drawbacks of lower reliability and modularity. An input voltage sharing control strategy for ISOP converter without interconnection based on positive output voltage gradient method, which can effectively improve the reliability and modularity of ISOP converter. Firstly the operation principle of the proposed control strategy is introduced, and the input voltage sharing performance and output voltage regulation characteristics are analyzed. The stability of the proposed control strategy is also analyzed. The experimental results are presented at last.
陈武, 王广江, 阮新波. 基于输出电压上翘特性的串-并型组合变换器无互联均压控制策略[J]. 电工技术学报, 2013, 28(10): 188-194.
Chen Wu, Wang Guangjiang, Ruan Xinbo. Input Voltage Sharing Control Strategy for ISOP Converter without Interconnection Based on Positive Output Voltage Gradient Method. Transactions of China Electrotechnical Society, 2013, 28(10): 188-194.
[1] 陈武, 阮新波, 颜红. 多变换器模块化串并联组合系统[J]. 电工技术学报, 2009, 24(6): 56-61. Chen Wu, Ruan Xinbo, Yan Hong. Modularization structure for series-parallel connected converters[J]. Transactions of China Electrotechnical Society, 2009, 24(6): 56-61. [2] Giri R, Choudhary V, Ayyanar R, et al. Common -duty-ratio control of input-series connected modular dc-dc converters with active input voltage and load- current sharing[J]. IEEE Transaction on Industry Applications, 2006, 42(4): 1101-1111. [3] Qian T, Lehman B. Dual interleaved active-clamp forward with automatic charge balance regulation for high input voltage application[J]. IEEE Transaction on Power Electronics, 2008, 23(1): 38-44. [4] Kim J, You J, Cho B. Modeling, control, and design of input-series-output-parallel-connected converter for high-speed-train power system[J]. IEEE Transaction on Industrial Electronics, 2001, 48(3): 536-544. [5] 陈武, 阮新波, 颜红. DC/DC 多模块串并联组合系统控制策略[J]. 电工技术学报, 2009, 24(7): 93-102. Chen Wu, Ruan Xinbo, Yan Hong. Control strategy for DC/DC multiple modules series-parallel combined systems. Transactions of China Electrotechnical Society, 2012, 24(7): 93-102.. [6] 程璐璐, 阮新波, 章涛. 输入串联输出并联的直流变换器控制策略研究[J]. 中国电机工程学报, 2006, 26(22): 67-73. Cheng Lulu, Ruan Xinbo, Zhang Tao．Control strategy for input-series output-paralleled DC-DC converters[J]. Proceedings of the CSEE, 2006, 26(22):67-73. [7] Sha D, Guo Z, Liao X. Cross-feedback output-current sharing control for input-series-output-parallel modular DC-DC converters[J]. IEEE Transaction on Power Electronics, 2010, 25(11): 2762-2771. [8] 陈杰, 刁利军, 林文立, 等. 输入串联输出并联全桥变换器的无电流传感器均压均流控制策略[J].工技术学报, 2012, 27(6): 126-130. Chen Jie, Diao Lijun, Lin Wenli, et al. Voltage sharing and sensor-less current sharing control strategy of ISOP full-bridge converter[J]. Transactions of China Electrotechnical Society, 2012, 27(6): 126-130. [9] Fan H, Li H. A distributed control of input- seriesoutput-parallel bidirectional dc-dc converter modules applied for 20 kVA solid state transformer[C]. IEEE Applied Power Electronics Conference and Exposition, 2011: 939-945. [10] Hayashi Y, Mino M. Series-parallel connected 10W/cm3 DC-DC converter for advanced high- density converter design[C]. IEEE Telecom- munications Energy Conference, 2011: 1-6.
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