Instantaneous compensation strategy of DC component in output voltage of photovoltaic grid-connected inverters

被引：0
|
作者：
机构：
[1] Chen, Kun
[2] Chen, Changwang
[3] Liu, Dichen
来源：
Chen, K. (294933037@qq.com) | 1600年 / Power System Technology Press卷 / 37期
关键词：
Electric inverters;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The DC component existing in the output voltage of PV grid-connected inverters causes harm to inverters, the grid and the load. Therefore, this paper proposes an instantaneous compensation strategy of the DC component in the output voltage of PV grid-connected inverters based on repetitive control. The cause of the DC component is analyzed and then repetitive control is introduced. This strategy detects the DC component by every carrier cycle, and the sum of the detected results is employed as feedback to adjust SPWM duty cycle with the output voltage PI control loop in order to achieve compensation of the DC component in the output voltage of PV grid-connected inverters. The feasibility of this strategy is verified through experimental results.
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