基于双调制波的单相三电平并网逆变器及电流优化控制

Abstract
Figure/Table
References
Related Citation (10)

Download: PDF (390 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The modulation strategy of three-level grid-connected inverter is very complexible, and it is hard to be implemented with DSP. A dual-reference waves based three-level SPWM method suitable for implementation by DSP is proposed, and then the dynamic mathematical model of the grid-connected inverter based on the aforementioned PWM method is derived. On the basis, aiming at the problem that conventional grid-connected deadbeat control is sensitive with the change of filtering inductor, an online inductor identification method adopting instantaneous current samples is proposed. The deadbeat current control is improved with the proposed method, thus the grid-connected current control performance is efficient. Corresponding experimental results verify the accuracy and feasibility of the proposed method.

Key words： Three-level grid-connected inverter dual-modulation waves deadbeat current control inductor identification

Received: 08 October 2011 Published: 20 March 2014

PACS:

TM464

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Fu Jiacai
	Guo Songlin
	Shen Xianqing

Cite this article:

Fu Jiacai,Guo Songlin,Shen Xianqing. Dual-Modulation Waves Based Single-Phase Three-Level Grid-Connected Inverter and Current Improvement Control[J]. Transactions of China Electrotechnical Society, 2012, 27(3): 159-163.

URL:

http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I3/159

[1] 顾和荣, 赵清林, 郭小强, 等. 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, et al. Grid-connected control for distributed generation based on two-degree-of-freedom current regulation[J]. Transactions of China Electrotechnical Society, 2010, 25(8): 154-160.
[2] 陈杰, 陈家伟, 龚春英. 三电平双升压式能馈型PWM整流器[J]. 电工技术学报, 2011, 26(3): 96-102.
Chen Jie, Chen Jiawei, Gong Chunying. A three-level dual-boost reversible PWM rectifier[J]. Transactions of China Electrotechnical Society, 2011, 25(3): 52-57.
[3] Rodriguez J, Jih Sheng L, Peng F. Multilevel Inverters: a survey of topologies, controls, and applications[J]. IEEE Transactions on Industry Electronics, 2002, 49(4): 724-738.
[4] Kouro S, Rebolledo J, Rodriguez J. Reduced switching-frequency-modulation algorithm for high- power multilevel inverters[J]. IEEE Transactions on Industry Electronics, 2007, 54(5): 2894-2901.
[5] Barreto L, Praca P P, Cruz C M T, et al. PID digital control using microcontroller and FPGA applied to a single-phase three-level inverter[C]. Proceedings of the IEEE International Applied Power Electronics Conference, 2007: 1443-1446.
[6] Katiamoorthy M, Sekar R M, Raj G C, et al. A new single-phase PV fed five-level inverter topology connected to the grid[C]. Proceedings of the IEEE International Communication, Control and Computing Technologies, 2010: 196-203.
[7] 杨勇, 阮毅, 吴国祥, 等. 基于DPWM1的无差拍解耦控制的三相并网逆变器[J]. 电工技术学报, 2010, 25(10): 101-107.
Yang Yong, Ruan Yi, Wu Guoxiang, et al. Deadbeat decoupling control of three-phase grid-connected inverters based on DPWM1[J]. Transactions of China Electrotechnical Society, 2010, 25(10): 101-107.
[8] Kojabadi H M, Yu B, Idris A G, et al. A novel DSP-based current-controlled PWM strategy for single phase grid connected inverters[J]. IEEE Transactions on Power Electronics, 2006, 21(4): 985-993.
[9] 杨勇, 阮毅, 叶斌英, 等. 三相并网逆变器无差拍电流预测控制方法[J]．中国电机工程学报, 2009, 29(37): 40-46.
Yang Yong, Ruan Yi, Ye Binying, et al. Deadbeat predictive current control method for three-phase grid-connected inverters[J]．Proceedings of the CSEE, 2009, 29(37): 40-46.
[10] Moreno J C, Huerta J M E, Gil R G, et al. A robust predictive current control for three-phase grid- connected inverters[J]. IEEE Transactions on Industry Electronics, 2009, 56(6): 1993-2004.
[11] 杨勇, 索迹, 祁春清, 等. 三相并网逆变器电感在线辨识控制[J]. 电机与控制学报, 2011, 15(3): 52-57.
Yang Yong, Suo Ji, Qi Chunqing, et al. Inductance online identification control for three-phase grid- connected inverters[J]. Electric Machines and Control, 2011, 15(3): 52-57.
[12] Antoniewicz P, Kazmierkowski M. Virtual-flux- based predictive direct power control of AC/DC converters with online inductance estimation[J]. IEEE Transactions on Industry Electronics, 2008, 55 (12): 4381-4390.
[13] 孙向东, 任碧莹, 钟彦儒, 等. 滤波电感在线估计方法在预测电流控制中的应用[J]. 电工技术学报, 2009, 24(7): 150-156.
Sun Xiangdong, Ren Biying, Zhong Yanru, et al. An online estimation method of the filter inductance for a predictive current control[J]. Transactions of China Electrotechnical Society, 2009, 24(7): 150-156.