微网中三相逆变器类功率下垂控制和并联系统小信号建模与分析

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (690 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract There is limitation of traditional power theory of parallel operation of inverters based on the voltage of point of common coupling (PCC) in micro-grid system. An improved power theory of parallel system is deduced based on output terminal voltage of an inverter from a viewpoint of micro-grid autonomy operation. The “quasi power” variables are defined by linear combination and quasi active power and quasi reactive power are only related to the phase and amplitude difference respectively. A quasi-power droop control method for parallel connected inverters is proposed based on the improved power theory. The small-signal mathematical model of the parallel system is derived in a novel droop control scheme, which provides a theoretical basis for the parallel system performance analysis and droop coefficient design. The experiments were studied in the PV platform formed by two parallel connected three-phase inverters and the experimental results verify the correctness and feasibility of the proposed method.

Key words： Droop control Quasi-power three-phase inverter parallel micro-grid

Received: 27 October 2010 Published: 19 March 2014

PACS:

TM464

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Zhang Chunjiang
	Wang Xiaohuan
	Xue Haifen
	Kan Zhizhong
	Wu Weiyang

Cite this article:

Zhang Chunjiang,Wang Xiaohuan,Xue Haifen等. A Quasi-Power Droop Control of Three-Phase Inverters and Small Signal Modeling and Analysis of Parallel System in Micro-Grid[J]. Transactions of China Electrotechnical Society, 2012, 27(1): 32-39.

URL:

http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I1/32

[1] Guerrero M, GarciadeVicuna L, Matas J, et al. A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems[J]. IEEE Transactions on Power Electronics, 2004, 9(5): 1205-1213.
[2] 段善旭, 夏斌, 康勇, 等. 电力线通信在逆变器无互联线并联中的应用[J]. 电力电子技术, 2004, 38(1): 84-86.
Duan Shanxu, Xia Bin, Kang Yong, et al. Application of power line communication in parallel operation of inverters without control interconnections[J]. Power Electronics, 2004, 38(1): 84-86.
[3] Chiang S J, Chang J M. Parallel control of the UPS inverters with frequency-dependent droop scheme[C]. PESC, 2001, 2: 957-961.
[4] 张尧, 马皓, 雷彪, 等. 基于下垂特性控制的无互联线逆变器并联动态性能分析[J]. 中国电机工程学报, 2009, 29(3): 42-47.
Zhang Yao, Ma Hao, Lei Biao, et al. Analysis of dynamic performance for parallel operation wire interconnections[J]. Proceedings of the CSEE, 2009, 29(3): 42-47.
[5] Mohamed Y, El-Saadany E F. Adaptive decentralized droop controller to preserve power sharing stability of paralleled inverters in distributed generation microgrids[J]. IEEE Transactions on Power Electronics, 2008, 23(6): 2806-2816.
[6] Pogaku N, Prodanovic M, Green T C. Modeling, analysis and testing of autonomous operation of an inverter-based microgrid[J]. IEEE Transactions on Power Electronics, 2007, 22(2): 613-625.
[7] Byun Y B, Koo T G, Joe K Y, et al. Parallel operation of three-phase UPS inverters by wireless load sharing control[C]. Proceedings of International Telecommunications Energy Conference, 2000: 526-532.
[8] 谢孟, 蔡昆, 胜晓松, 等. 400 Hz中频单相电压源逆变器的输出控制及其并联运行控制[J]. 中国电机工程学报, 2006, 26(6): 78-82.
Xie Meng, Cai Kun, Sheng Xiaosong, et al. Output control and parallel operation control of 400hz single-phase voltage-source inverter [J]. Proceedings of the CSEE, 2006, 26(6): 78-82.
[9] 杨淑英, 张兴, 张崇巍. 基于下垂特性的逆变器并联技术研究[J]. 电工电能新技术, 2006, 25(2): 7-10.
Yang Shuying, Zhang Xing, Zhang Chongwei. Study on parallel operation of inverters based on droop method[J]. Advanced Technology of Electrical Engineering and Energy, 2006, 25(2): 7-10.
[10] 林新春, 段善旭, 康勇, 等. 基于下垂特性控制的无互联线并联UPS建模与稳定性分析[J]. 中国电机工程学报, 2004, 24(2): 33-38.
Lin Xinchun, Duan Shanxu, Kang Yong, et al. Modeling and stability analysis for parallel operation of ups with no control interconnection basing on droop characteristic[J]. Proceedings of the CSEE, 2004, 24(2): 33-38.
[11] Jiannn-Fuh Chen, Ching-Lung Chu. Modular parallel three phase inverter system[C]. Processings of the IEEE International Symposium on Industrial Electronics, 1995: 237-242.
[12] Katiraei F, Iravani M R, Lehn P W. Small-signal dynamic model of a micro-grid including conventional and electronically interfaced distributed resources[J]. IET Generations Transmmision Distribution, 2007, 1(3): 369-378.
[13] Marwali M N, Jung J W, Keyhani A. Stability analysis of load sharing control for distributed generation systems[J]. Transactions on Energy Conversion, 2007, 22(3): 737-745.