Abstract：Two-degree-of-freedom nonsinusoidal current regulation (TDFNSCR) concept is proposed for utility-interface control in distributed generation applications. Unlike the conventional sinusoidal current regulation (SCR) concept, the proposed concept enables both SCR and power quality enhancements in utility. Thevenin-Norton equivalent circuit is provided to clarify how to enhance the power quality, based on which the TDFNSCR solution is proposed. Its unique feature is to achieve the combination control of active filters and power generation without additional compensating devices or any harmonic current sensor, without positioning the harmonic sources as well. Besides, it can be applied both single-phase systems and three-phase systems. The proposed concept is verified by the exhaustive simulations with Matlab/Simulink. The results confirm the concept.
顾和荣, 赵清林, 郭小强, 邬伟扬. 基于二自由度电流调节的分布式发电系统并网控制技术[J]. 电工技术学报, 2010, 25(8): 154-160.
Gu Herong, Zhao Qinglin, Guo Xiaoqiang, Wu Weiyang. Grid-Connected Control for Distributed Generation Based on Two-Degree-of-Freedom Current Regulation. Transactions of China Electrotechnical Society, 2010, 25(8): 154-160.
[1] 汪海宁, 苏建徽, 张国荣, 等. 光伏并网发电及无功补偿的统一控制[J]. 电工技术学报, 2005, 20(9): 114-118. [2] Jung S, Bae Y, Choi S, et al. A low cost utility interactive inverter for residential fuel cell generation[J]. IEEE Transactions on Power Electronics, 2007, 22(6): 2293-2298. [3] Chen Y M, Liu Y C, Hung S C, et al. Multi-input inverter for grid-connected hybrid PV/wind power system[J]. IEEE Transactions on Power Electronics, 2007, 22(3): 1070-1077. [4] Infield D, Onions P, Simmons A, et al. Power quality from multiple grid-connected single-phase inverters[J]. IEEE Transactions on Power Delivery, 2004, 19(4): 1983-1989. [5] 张承慧, 叶颖, 陈阿莲, 等. 基于输出电流控制的光伏并网逆变电源[J]. 电工技术学报, 2007, 22(8): 41-45. [6] 顾和荣, 杨子龙, 邬伟扬. 并网逆变器输出电流滞环跟踪控制技术研究[J]. 中国电机工程学报, 2006, 26(9): 108-112. [7] Akagi H. Trends in active power line conditioners[J]. IEEE Transactions on Power Electronics, 1994, 9(3): 263-268. [8] Han B, Bae B, Kim H, et al. Combined operation of unified power quality conditioner with distributed generation[J]. EEE Transactions on Power Delivery, 2006, 21(1): 330-338. [9] Enslin J, Heskes P. Harmonic interaction between a large number of distributed power inverters and the distribution network[J]. IEEE Transactions on Power Electronics, 2004, 19(6): 1586-1593. [10] 赵清林. 准单级高频链逆变电源控制及并网技术研究[D]. 秦皇岛: 燕山大学, 2007. [11] Fukuda S, Yoda T. A novel current-tracking method for active filters based on a sinusoidal internal model[J]. IEEE Transactions on Industry Applications, 2001, 37(3): 888-89.
2010, Vol. 25 
