Research on the improved current deadbeat control algorithm of photovoltaic grid-connected inverter

Yang Ping, Chen Nan, Liu Shengrong
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引用次数: 7

Abstract

It is vital to improve the deadbeat control algorithm. There are disadvantages of the traditional algorithm, such as the pulse width limit and phase delaying. The improved algorithm, which combines the prediction algorithm and the deadbeat control, can calculate the switching duty cycle of photovoltaic grid-connected inverter in advance and output timely. In this paper, this new method is introduced in detail, and the advantages compared to the traditional algorithm are presented. Simulation experiments are done based on both algorithms. The results verify that the phase of output current tracks the grid voltage better. The power factor is so closed to 1 and the current quality is largely improved.
改进的光伏并网逆变器电流无差拍控制算法研究
因此,改进无差拍控制算法至关重要。传统算法存在脉冲宽度限制和相位延迟等缺点。该改进算法将预测算法与无差拍控制相结合,可以提前计算光伏并网逆变器的开关占空比并及时输出。本文对这种新方法进行了详细的介绍,并指出了与传统算法相比的优点。基于这两种算法进行了仿真实验。结果表明,输出电流的相位较好地跟踪了电网电压。功率因数如此接近于1,电流质量大大提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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