Modeling and Regulator Design for Three-Input DC-DC Converters with Decoupling Control
Li Yan1, Trillion Q Zheng1, Chen Jiayao1, Zhao Chuang2
1. Beijing Jiaotong University Institute of Power Electronics Beijing 100044 China; 2. Yanshan University Electrical Engineering College Qinhuangdao 066004 China
Abstract：Hybrid power systems derive power simultaneously from several renewable energy sources and deliver power continuously to the load. For such systems, the use of a multiple-input converter (MIC) has the advantage of simpler circuit design and lower cost. The hybrid power system with a MIC is a typical multiple-input and multiple-output coupled system, so the closed-loop design is very complicated. In this paper, a novel three-input Buck, Boost, Buck-Boost converter is taken as an example, decoupling control will be inserted to the system and the regulator can be designed respectively. Static and dynamic permanence will be enhanced. Experimental results are given to verify the design effectiveness with a 400W prototype. This method can be applied to the other three-input DC-DC converters.
[1] Kim S K, Jeon J H, Cho C H, et al. Dynamic modeling and control of a grid-connected hybrid generation system with versatile power transfer[J]. IEEE Transactions on Industrial Electronics, 2008, 55(4): 1677-1688. [2] Wai R J, Lin C Y, Lin C Y, et al. High-efficiency power conversion system for kilowatt-level stand-alone generation unit with low input voltage[J]. IEEE Transactions on Industrial Electronics, 2008, 55(10): 3702-3710. [3] Timbus A, Liserre M, Teodorescu R, et al. Evaluation of current controllers for distributed power generation systems[J]. IEEE Transactions on Power Electronics, 2009, 24(3): 654-664. [4] Agbossou K, Kélouwani S, Anouar A, et al. Energy management of hydrogen-based stand-alone renewable energy system by using boost and buck converters[C]. Proceedings of IEEE Industry Applications Conference, 2004:2786-2793. [5] Iannone F, Leva S, Zaninelli D. Hybrid photovoltaic and hybrid photovoltaic fuel cell system: economic and environmental analysis[C]. Proceedings of IEEE Power Engineering Society General Meeting, 2005: 1503-1509. [6] Rodriguez M, Fernandez Miaja, Rodriguez P, et al. A multiple-input digitally controlled buck converter for envelope tracking applications in radiofrequency power amplifiers[J]. IEEE Transactions on Power Electronics Industrial Electronics 2010, 11(09): 369-381. [7] Xie Jun, Zhang Xing, Zhang Chongwei, et al. Research on bi-directional dc-dc converter for a stand-alone photovoltaic hybrid energy storage system[C]. Proceedings of IEEE Asia-Pacific Power and Energy Engineering Conference, 2010: 1-4. [8] Gummi K, Ferdowsi M. Double-Input DC-DC power electronic converters for electric-drive vehicles topology exploration and synthesis using a single-pole triple-throw switch[C]. Proceedings of IEEE Transactions on Industrial Electronics 2010: 617-623. [9] Poshtkouhi S, Trescases O. Multi-input single-inductor DC-DC converter for MPPT in parallel-connected photovoltaic applications[C]. Proceedings of IEEE Asia-Pacific Power and Energy Engineering Conference, 2011: 41-47. [10] Gavris M, Cornea O, Muntean N. Multiple input DC-DC topologies in renewable energy systems-a general review[C]. IEEE 3rd International Symposium on Exploitation of Renewable Energy Sources 2011, 4: 123-128. [11] Yang Dongsheng, Ruan Xinbo, Yan Li, et al. Multiple-input full bridge DC-DC converter[C]. Proceedings of IEEE Energy Conversion Congress and Exposition, 2009, 2881-2888. [12] 李艳, 阮新波, 杨东升. 一种双输入直流变换器[J]. 电工技术学报, 2008, 23(6): 77-82. [13] Somayajula D, Ferdowsi M. Small-signal modeling and analysis of the double-Input buck/boost converter[C]. Proceedings of Asia-Pacific Power and Energy Engineering Conference, 2010: 2111-2115. [14] Middlebrook R D, Cuk S. A general unified approach to modeling switching converter power stages[C]. Proceedings of IEEE Power Electronics Specialists Conference, 1976: 18-34.
2013, Vol. 28 
