A Modular DC/DC Photovoltic Generation System for HVDC Grid Connection

中国电气工程学报（英文） ›› 2018, Vol. 4 ›› Issue (2): 56-64.

出版日期:2018-06-25 发布日期:2019-10-31

A Modular DC/DC Photovoltic Generation System for HVDC Grid Connection

Guoen Cao^1,*, Kai Sun², Siyue Jiang², Shilei Lu², Yibo Wang¹

1. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. State Key Laboratory of Power Systems, Tsinghua University, Beijing 100084, China

Online:2018-06-25 Published:2019-10-31
Contact: *, Email:caoguoen@mail.iee.ac.cn.
About author:Guoen Cao received the B.S degree in electrical engineering from Shandong University of science and technology, Qingdao, China, in 2009, the M.S. degree in electrical engineering from Beihang University, Beijing, China in 2012, and the Ph.D. degree in Electronics System Engineering from Hanyang University, Seoul, Korea in 2015. He is currently an Assistant Professor of Institute of Electrical Engineering, Chinese Academy of Sciences. His current research interests include resonant and soft switching power converter design, high efficiency power supplies in renewable energy applications, wide bandgap semiconductors and application, and electric vehicles. Kai Sun received the B.E., M.E., and Ph.D. degrees in electrical engineering all from Tsinghua University, Beijing, China, in 2000, 2002, and 2006, respectively. In 2006, he joined the Faculty of Tsinghua University as a Lecturer of Electrical Engineering. From September 2009 to August 2010, he was a Visiting Scholar of Electrical Engineering at Institute of Energy Technology, Aalborg University, Denmark. He is currently with Tsinghua University, Beijing, China. His research interests include power converters, AC motor drives, and renewable generation systems. Shilei Lu (S’18) received the B.S. degree in electrical engineering from Southwest Jiaotong University, Chengdu, China, in 2017. He is currently a Ph.D. candidate in Department of Electrical Engineering, Tsinghua University, Beijing, China. His research interests include high efficiency DC-DC converters, multi-level converters, photovoltaic generation and microgrid applications. Yibo Wang received the B.S. and M.S. degrees in power electronics from Xinjiang University, Xinjiang, China, in 1994 and 2001, respectively, and the Ph.D. degree in Power Electronics from Chinese Academy of Sciences, Beijing, China, in 2009. He is currently a professor with Institute of Electrical Engineering, Chinese Academy of Sciences. His current research interests include PV system and microgrid system.
Supported by:
Supported by the National Key Research and Development Program “Novel DC-DC Boost Converter Module Based on Wide Bandgap Power Device for HVDC-Connected Photovoltaic Unit” (2016YFB0900205).

摘要/Abstract

Abstract: A modular DC/DC conversion system with distributed MPPT and centralized step-up converter for photovoltaic energy integrated into HVDC grids is proposed in this paper. The conversion system consists of two power stages, with MPPT converter as the first stage and a step-up converter as the second stage. Both stages are modular structures. For the distributed MPPT stage, interleaved boost topology is utilized to effectively reduce the input and output ripples without adding extra components. For the centralized step-up stage, narrow-switching-frequency-variation LLC topology is employed, with the modules being configured as input-parallel-output-series structure. Full-range soft-switching property is achieved in the LLC stage to minimize switching losses. Theoretical analysis is carried out for the system voltage gain and design principles. Simulation and experimental results of a 3kW prototype system are presented to verify the theoretical analysis of the proposed system.

Key words: Photovoltaic generation, DC-DC converter, HVDC grid connection, cascaded configuration

. [J]. 中国电气工程学报（英文）, 2018, 4(2): 56-64.

Guoen Cao, Kai Sun, Siyue Jiang, Shilei Lu, Yibo Wang. A Modular DC/DC Photovoltic Generation System for HVDC Grid Connection[J]. Chinese Journal of Electrical Engineering, 2018, 4(2): 56-64.

参考文献

[1] S. Ghosh,S. Rahman, “Global deployment of solar photovoltaics: its opportunities and challenges,” in2016 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe), pp. 1-6, Oct 2016.
[2] D. Noel, F. Sozinho, D. Wilson,K. Hatipoglu, “Analysis of large scale photovoltaic power system integration into the existing utility grid using PSAT,” inSoutheast Con 2016, pp.1-7, March 2016.
[3] J. W. Zapata, T. A. Meynard,S. Kouro, “Partial power DC-DC converter for large-scale photovoltaic systems, ” in2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC), pp.1-6, Dec 2016.
[4] Y. Liu, H. Abu-Rub,B. Ge, “Front-end isolated quasiz- source DC-DC converter modules in series for high-power photovoltaic systems part i: configuration, operation, and evaluation,” IEEE Transactions on Industrial Electronics, vol. 64, no. 1, pp. 347-358, Jan 2017.
[5] R. K. Varma, S. A. Rahman, T. Vanderheide,M. D. N.Dang, “Harmonic impact of a 20MW PV solar farm on a utility distribution network,” IEEE Power and Energy Technology Systems Journal, vol.3, no.3, pp.89-98, Sept 2016.
[6] H. Hu, Q. Shi, Z. He, J. He,S. Gao, “Potential harmonic resonance impacts of PV inverter filters on distribution systems,” IEEE Transactions on Sustainable Energy, vol.6, no.1, pp.151- 161, Jan 2015.
[7] K. Kawabe, Y. Ota, A. Yokoyama,K. Tanaka, “Novel dynamic voltage support capability of photovoltaic systems for improvement of short-term voltage stability in power systems, ” IEEE Transactions on Power Systems, vol.32, no.3, pp. 1796- 1804, May 2017.
[8] Y. Wang, C. Ju, H. Wang,S. Meng, “Design and control of DC-DC grid-connected converter for photovoltaic power,” in31st European Photovoltaic Solar Energy Conference and Exhibition, pp. 2353-2357, 2014.
[9] C. A. Rojas, S. Kouro, M. A. Perez,J. Echeverria, “DC-DC MMC for HVDC grid interface of utility-scale photovoltaic conversion systems,” IEEE Transactions on Industrial Electronics, vol. PP, no. 99, pp.1-1, 2017.
[10] R. E.Torres-Olguin, M. Molinas, and T. Undeland, “Offshore wind farm grid integration by VSC technology with LCC-based HVDC transmission,” IEEE Transactions on Sustainable Energy, vol. 3, no. 4, pp. 899-907, Oct 2012.
[11] J. W. Kim,G. W. Moon, “A new LLC series resonant converter with a narrow switching frequency variation and reduced conduction losses,” IEEE Transactions on Power Electronics, vol. 29, no. 8, pp. 4278-4287, Aug 2014.
[12] F. M. Ibanez, J. M. Echeverria, J. Vadillo,L. Fontan, “A step-up bidirectional series resonant DC/DC converter using a continuous current mode,” IEEE Transactions on Power Electronics, vol. 30, no. 3, pp. 1393-1402, March 2015.
[13] Y. F. Huang, Y. Konishi,W. J. Ho, “Series resonant type soft-switching grid-connected single-phase inverter employing discontinuous-resonant control applied to photovoltaic AC module,” in2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 989-994, March 2011.
[14] S. Lu, Z. Zhao, L. Yuan, T. Lu, Y. Jiao, M. Mu,F. C. Lee, “Modularized high frequency high power 3-level neutral point clamped PEBB cell for renewable energy system, ” in2014 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 2594-2599, Sept 2014.
[15] G. Cao, Z. Guo, Y. Wang, K. Sun,H. J. Kim, “A DC-DC conversion system for high power HVDC-connected photovoltaic power system,” in2017 20th International Conference on Electrical Machines and Systems (ICEMS), pp.1-6, Aug 2017.
[16] J. Y. Lee, Y. S. Jeong,B. M. Han, “An isolated DC/DC converter using high-frequency unregulated LLC resonant converter for fuel cell applications,” IEEE Transactions on Industrial Electronics, vol.58, no.7, pp.2926-2934, July 2011.
[17] Y. Lu, Y. Xing,H. Wu, “A PWM plus phase-shift controlled interleaved isolated boost converter based on semiactive quadrupler rectifier for high step-up applications,” IEEE Transactions on Industrial Electronics, vol. 63, no. 7, pp. 4211-4221, July 2016.
[18] G. Cao, Z. Guo, Y. Wang,K. Sun, “A high step-up modular DC/DC converter for photovoltaic generation integrated into DC grids, ” inIECON 2017 -43rd Annual Conference of the IEEE Industrial Electronics Society, pp. 4421-4426, Oct 2017.
[19] G. Xu, D. Sha,X. Liao, “Input-series-output-parallel connected modular high frequency isolated AC-AC converters with positive compensation of inner-current loop,” IET Power Electronics, vol. 9, no. 9, pp. 1784-1791, 2016.
[20] C. Liu, X. Xu, D. He, H. Liu, X. Tian, Y. Guo, G. Cai, C. Ma,G. Mu, “Magnetic-coupling current-balancing cells based input-parallel output-parallel LLC resonant converter modules for high-frequency isolation of DC distribution systems,” IEEE Transactions on Power Electronics, vol.31, no.10, pp. 6968-6979, Oct 2016.
[21] F. Katiraei,J. R. Aguero, “Solar PV integration challenges, ” IEEE Power and Energy Magazine, vol. 9, no. 3, pp. 62-71, May 2011.
[22] A. Parastar, Y. C. Kang,J. K. Seok, “Multilevel modular DC/DC power converter for high-voltage DC-connected offshore wind energy applications,” IEEE Transactions on Industrial Electronics, vol. 62, no. 5, pp. 2879-2890, May 2015.

A Modular DC/DC Photovoltic Generation System for HVDC Grid Connection

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价