基于CPT理论和重复控制的多功能并网逆变器研究

doi:10.19595/j.cnki.1000-6753.tces.171010

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Abstract For the three-phase three-wire multi-functional grid-connected inverters, a modified power quality compensation strategy was proposed in the paper based on conservative power theory (CPT) in two-phase stationary coordinate system. The proposed strategy can extract the compensation components of the load currents without the phase-locked loop (PLL), even when the voltages of the point of common coupling (PCC) are distorted. Then, the output-current control loop was designed based on H_∞ repetitive theory to realize the load current compensation as well as the active power output control under distorted voltages. By considering the local load, the general load mode according to CPT was adopted. Thus, a stability analysis method was proposed to study the stability problem of the current control system with the H_∞ repetitive controller, which is suitable for complex loads and grid-impedance scenarios. Finally, the proposed control system was tested in a hardware platform. The experimental results show that the proposed strategy can compensate the power quality problem.

Key words： Grid-connected inverter power quality conservative power theory H_∞ repetitive control;

Received: 14 July 2017 Published: 26 September 2018

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TM464

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	Articles by authors
	Jin Wei
	Li Yongli
	Bu Lizhi
	Sun Guangyu

Cite this article:

Jin Wei,Li Yongli,Bu Lizhi等. Research on Multi-Functional Grid-Connected Inverters Based on Conservative Power Theory and Repetitive Control[J]. Transactions of China Electrotechnical Society, 2018, 33(18): 4345-4356.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171010 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I18/4345

[1] 肖湘宁. 电能质量分析与控制[M]. 北京: 中国电力出版社, 2004.
[2] 韩智海. 分布式光伏并网发电系统接入配电网电能质量分析[D]. 济南: 山东大学, 2013.
[3] Infield D G, Onions P, Simmons A D, et al.Power quality from multiple grid-connected single-phase inverters[J]. IEEE Transactions on Power Delivery, 2004, 19(4): 1983-1989.
[4] Ghiani E, Pilo F.Smart inverter operation in distribution networks with high penetration of photovoltaic systems[J]. Journal of Modern Power Systems and Clean Energy, 2015, 3(4): 504.
[5] 曾正. 多功能并网逆变器及其微电网应用[D]. 杭州: 浙江大学, 2014.
[6] 李盛伟, 李永丽, 孙景钌, 等. 基于逆变型分布式电源控制策略的微电网电能质量控制方法[J]. 电网技术, 2010, 34(8): 6-11.
Li Shengwei, Li Yongli, Sun Jingliao, et al.A power quality control algorithm for micro-grid based on control strategy for inverter interfaced distributed generator[J]. Power System Technology, 2010, 34(8): 6-11.
[7] 雷亚雄, 李建文, 李永刚. 基于准PR调节器电流双闭环LCL三相并网逆变器控制[J]. 电力系统保护与控制, 2014, 42(12): 44-50.
Lei Yaxiong, Li Jianwen, Li Yonggang.Control strategy of three-phase LCL grid-connected inverter based on quasi-PR adjuster[J]. Power System Protection and Control, 2014, 42(12): 44-50.
[8] Li Yunwei, He Jinwei.Distribution system harmonic compensation methods: an overview of DG- interfacing inverters[J]. IEEE Industrial Electronics Magazine, 2014, 8(4): 18-31.
[9] 杭丽君, 李宾, 黄龙, 等. 一种可再生能源并网逆变器的多谐振PR电流控制技术[J]. 中国电机工程学报, 2012, 32(12): 51-58.
Hang Lijun, Li Bin, Huang Long, et al.A multi- resonant PR current controller for grid-connected inverters in renewable energy systems[J]. Pro- ceedings of the CSEE, 2012, 32(12): 51-58.
[10] Weiss G, Häfele M.Repetitive control of MIMO systems using H_∞ design[J]. Automatica, 1999, 35(7): 1185-1199.
[11] Hornik T, Zhong Q C.A current-control strategy for voltage-source inverters in microgrids based on H_∞ and repetitive control[J]. IEEE Transactions on Power Electronics, 2011, 26(3): 943-952.
[12] 靳伟, 李永丽, 孙广宇. 基于有源阻尼的并网逆变器电流内环H_∞ 重复控制[J]. 中国电机工程学报, 2016, 36(17): 4685-4694.
Jin Wei, Li Yongli, Sun Guangyu.H_∞ repetitive current controllers for grid-connected inverters based on active damping[J]. Proceedings of the CSEE, 2016, 36(17): 4685-4694.
[13] 曾正, 邵伟华, 赵伟芳, 等. 多功能并网逆变器与并网微电网电能质量的分摊控制[J]. 中国电机工程学报, 2015, 35(19): 4947-4955.
Zeng Zheng, Shao Weihua, Zhao Weifang.et al.Coordination control of multiple multi-functional grid-tied inverters to share power quality issues for grid- connected micro-grid[J]. Proceedings of the CSEE, 2015, 35(19): 4947-4955.
[14] 卜立之, 李永丽, 孙广宇, 等. 基于改进型重复控制算法的多功能并网逆变器设计[J]. 电力系统自动化, 2017, 41(12): 48-55, 69.
Bu Lizhi, Li Yongli, Sun gungyu, et al. Design of multi-functional grid-connected inverter based on modified repetitive control algorithm[J]. Automation of Electric Power Systems, 2017, 41(12): 48-55, 69.
[15] Mortezaei A, Lute C, Simoes M G, et al.PQ, DQ and CPT control methods for shunt active compensators— A comparative study[C]//Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014: 2994-3001.
[16] 张超, 马小平, 张义君, 等. 间谐波环境下并联有源电力滤波器系统设计[J]. 电工技术学报, 2015, 30(20): 118-127.
Zhang Chao, Ma Xiaoping, Zhang Yijun, et al.System design of shunt active power filter for inter-harmonics[J]. Transactions of China Electro- technical Society, 2015, 30(20): 118-127.
[17] Tenti P, Paredes H K M, Mattavelli P. Conservative power theory, a framework to approach control and accountability issues in smart microgrids[J]. IEEE Transactions on Power Electronics, 2011, 26(3): 664-673.
[18] Liserre M, Teodorescu R, Blaabjerg F.Stability of photovoltaic and wind turbine grid-connected inverters for a large set of grid impedance values[J]. IEEE Transactions on Power Electronics, 2006, 21(1): 263-272.
[19] 许胜, 曹武, 赵剑锋. 一种基于公共连接点谐波分布的模块化APF无线并联控制策略[J]. 电工技术学报, 2017, 32(12): 117-126.
Xu Sheng, Cao Wu, Zhao Jianfeng.A novel wireless parallel control strategy for modular APF based on the point of common coupling harmonic currents distribution[J]. Transactions of China Electro- technical Society, 2017, 32(12): 117-126.
[20] 赵红雁, 李艳, 杜吉飞, 等. 三相并网系统的一种快速相位检测方法[J]. 电工技术学报,2016, 31(增刊2): 67-75.
Zhao Hongyan, Li Yan, Du Jifei, et al.A fast phase detection method applied in three-phase grid connected system[J]. Transactions of China Electro- technical Society, 2016, 31(S2): 67-75.
[21] 杜雄, 郭宏达, 孙鹏菊, 等. 基于ANF-PLL的电网电压基波正负序分离方法[J]. 中国电机工程学报, 2013, 33(27): 28-35.
Du Xiong, Guo Hongda, Sun Pengju, et al.A positive and negative sequence component separation method for grid voltage based on the phase locked loop with an adaptive notch filter[J]. Proceedings of the CSEE, 2013, 33(27): 28-35.
[22] Pan Donghua, Ruan Xinbo, Bao Chenlei, et al.Capacitor-current- feedback active damping with reduced computation delay for improving robustness of LCL-type grid-connected inverter[J]. IEEE Transactions on Power Electronics, 2014, 29(7): 3414-3427.
[23] 张学广, 马彦, 李瑞, 等. 两相静止坐标系下并网逆变器的重复控制策略[J]. 电工技术学报, 2016, 31(9): 85-91.
Zhang Xueguang, Ma Yan, Li Rui, et al.Repetitive control strategy for grid-connected converters in stationary frame[J]. Transactions of China Electro- technical Society, 2016, 31(9): 85-91.