A Kind of DC-DC Converter Based on LLC Resonant in Rural Nano Grid

Xuesong Suo

Abstract


The load of the rural grid is changeable and irregular, it is easily affected by the large power grid. This paper proposed the concept of “rural nano grid”, which can combines the power generation system, energy storage system and control system into unified whole. The rural nano grid can work in the grid-connected mode and off-grid mode when there are some faults in large power grid, so that power supply in rural areas can be sustainable. Then this paper proposed a new kind of LLC resonant DC-DC converter, which can ensure the power generation system of the rural nano grid supply power for the load and energy storage system under wide load range with high efficiency that can be appropriate for characteristics of the rural nano grid. At last a prototype with a power rating of 5kW is designed and built up to verity validity and correctness of the converter proposed in this paper.


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References


Beiranvand R., Rashidian B., Zolghadri M.R. (2011). Optimizing theNormalized Dead-Time and Maximum Switching Frequency of a Wide-Adjustable-Range LLC Resonant Converterf. Power Electronics, IEEE Transactionson, (26): 462-472.

Bian J.T. (2013). Application and Research on Voltage Quality andReactive Power Compensation in rural power network. North China Electric Power University.

Bryan J., Duke R., Round S. (2003). Decentralized control of a nano grid. Australasian Universities Power Engineering Conference. Christchurch.

Bryan J., Duke R., Round S. (2004). Decentralized generator scheduling in a nano grid usingDC bussignaling, Institute ofElectrical and Electronics Engineers (IEEE). 2004 IEEE power Engineering Society General Meeting. Piscataway: IEEE Power and Energy Society, (1): 977-982.

Cao C.D. (2011). Development and trends of solar energy PV generation at home and aboard. Telecom Power Technology, 28(1): 35-37.

Hayashi Y. (2013). Power density design of SiC and GaN DC-DC converters for 380V DC distribution system based on series-parallel circuit topology, IEEE Applied Power Electronics Conference and Exposition. Long Beach: IEEE, 1601-1606.

Huang A.Q., Crow M.L., Heydt G.T., Zheng J.P., Dale S.J. (2011). The future renewable electric energy delivery and management system: the energy internet. Proceedings of the IEEE, 99(1): 133-148

Jiang D.Z., Zheng H. (2012). Research status and developing prospect of DC distribution network. Automation of Electric Power Systems, 36(8): 98-104(in Chinese).

Jung J.H., Kim H.S., Ryu M.H., Baek G.W. (2013)．Design methodology of bidirectional CLLC resonant converter for high-frequency isolation of DC distribution systems. IEEE Trans. on Power Electronics, 28(4): 1741-1755.

Lasseter R.H. (2011). Smart distribution: coupled microgrids. Proceedings of the IEEE, 99(6): 1074-1082.

Liu X. (2014). Consider The Development of Urbanization ofRural Power Types of LoadEffects CointegrationAnalysis and Forecasting. Changsha University of Science & Technology, 22(1): 33-39.

Malara A., Marino C., Nucara A., Pietrafesa M., Scopelliti F., Streva G. (2016). Energetic and economic analysis of shading effects on PV panels energy production. International Journal of Heat and Technology, 34(3), 465-472

Wu W.M., He Y.B., Geng P., Qian Z.M., Wang G.S.(2012). Key technologies for DC micro-grids. Transactions of China Electro technical Society, 27(1): 98-107(in Chinese).

Xiao C.X., Liu D., Zhao Q.Y. (2012). Simulation and design of multifunctional PV-inverter system. Journal of Electric Power Science and Technology, 27(4): 12-16.

Xin Y.B., Xin Y.C., Zhang F.H. (2013). Bi-directional DC Transformer Based on Full-bridge LLC resonant. Power Electronics, 47(4): (3-5).

Yang B., Lee F.C., Concannon M. (2003). Over current protection methods for LLC resonant converter, In Proceeding of IEEE Applied Power Electronics Conference and Exposition, 2: 605-609.


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Revista de la Facultad de Ingeniería,

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