摘要
对光伏并网发电系统进行研究,提出了两级光伏并网发电系统的结构和控制策略。在电路结构上,该系统前级电路采用Boost升压变换电路,后级电路采用三相逆变电路。在控制策略上,前级电路应用扰动观察法实现光伏发电系统的最大功率跟踪,后级电路通过电压电流双闭环控制实现并网控制,有效降低了控制策略的复杂度。最后,利用Matlab软件搭建了仿真模型,验证了所提控制策略的有效性。
The structure and control strategy of two-stage photovoltaic grid-connected power generation system are proposed by studying the photovoltaic grid-connected power generation system.In terms of circuit configuration,the front-stage circuit adopts Boost converter for voltage stepping up,and the rear-stage circuit utilizes the three-phase inverter circuit.Regarding the control strategy,the front-stage circuit adopts the perturbation and observation method to achieve maximum power point tracking of the photovoltaic power generation system,and the rear-stage circuit achieves grid-connected control through dual closed-loop control of voltage and current,which effectively reduces the complexity of the system.Finally,the simulation model is constructed using Matlab,which verifies the effectiveness of the proposed control strategy.
作者
张辛萌
吴文博
丁广乾
ZHANG Xinmeng;WU Wenbo;DING Guangqian(University of Jinan,Jinan 250001,China)
出处
《山东电力高等专科学校学报》
2024年第4期34-39,50,共7页
Journal of Shandong Electric Power College
关键词
光伏发电系统
两级电路
最大功率点跟踪
并网控制
photovoltaic power generation system
two-stage circuit
maximum power point tracking
grid-connected control
