A deadbeat decoupling control strategy of Z-source photovoltaic grid-connected inverter

被引：0

作者：

Liu, Xiaohui ^{[1
]}

Zheng, Jianyong ^{[1
,2
]}

Huang, Jinjun ^{[1
]}

Wang, Chong ^{[1
]}

机构：

[1] School of Electrical Engineering, Southeast University

[2] Laboratory of Electrical Equipment and Automation in Suzhou, Southeast University

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2012年 / 36卷 / 12期

关键词：

Deadbeat decoupling; Dual-timer sampling; Grid-connected inverter; Modified space vector pulse width modulation; Photovoltaic generation; Z-source inverter;

D O I：

10.3969/j.issn.1000-1026.2012.12.005

中图分类号：

学科分类号：

摘要：

A deadbeat decoupling control method of Z-source photovoltaic grid-connected inverter is proposed. This method overcomes the disadvantages of conventional PI control method such as sensitivity to the unbalance of the grid system and no-linear characteristic. The proposed control algorithm combines deadbeat and decoupling method. In order to minimize the error caused by the program executing and sampling time, the dual-timer sampling method is used. This control strategy is good at response speed, high accuracy and stability. A modified space vector pulse width modulation algorithm is used to realize the boost ability of Z-source. The current injected into grid is synchronous with the grid voltage, so a unity power factor is realized. Simulation and experiment results both validate the feasibility of the proposed algorithm. © 2012 State Grid Electric Power Research Institute Press.

引用

页码：25 / 29

页数：4

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