期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：227
期号：2
页码：022023
DOI：10.1088/1755-1315/227/2/022023
出版社：IOP Publishing
摘要：Grid-connected inverter is the core device of photovoltaic grid-connected power generation system. Its performance directly affects the quality of power grid. The control structure of the single-stage full bridge inverter is analyzed. The performance of the proportional resonant control algorithm and the PI control algorithm are compared in the paper. Based on the repetition, the feed-forward control is added to the control strategy of the grid-connected inverter. An improved proportional resonance control algorithm is proposed, which is applied to the current loop control of the inverter. The simulation results show that the control strategy can make the output current of the system the same as the frequency and phase of the grid current. There is no static error, and the output is not affected by the disturbance of the power grid.
