摘要
光伏并网发电系统是利用太阳能的主要技术之一,并网逆变器是实现其与电网连接的核心部分。为使光伏并网逆变器逆变输出电流能够更好地跟踪电网电压基波,完成同步锁相功能,本文以1kW单相光伏并网逆变器为研究平台,阐述光伏并网逆变器的工作原理和系统结构,分析并网逆变器的并网控制技术,提出一种基于坐标变换的双park鉴相器的软件锁相技术,最后通过Matlab仿真验证该方法的可行性。
Grid-connected PV system is one of the technologies to use the solar energy. Grid-connected inverter is a core part of linking the grid. In order to make the output current of grid-connected inverter track the grid voltage fundamental and complete the Genlock, this paper uses 1 kW single-phase photovohaic grid-connected inverter as research platform. The paper describes the working principle of the photovoltaic grid-connected inverter and the system architecture. It analyzes the control technology of grid-connected inverter mad proposes a software phase-locked loop of a dual-park phase detector based on coordinate transforma- tion. At last it verifies the feasibility of this method by Matlab simulation.
出处
《计算机与现代化》
2012年第9期54-56,60,共4页
Computer and Modernization
关键词
单相光伏并网逆变器
并网控制
软件锁相环
MATLAB仿真
single-phase photovoltaic grid-connected inverter
network control
software phase-locked loop
Madab simulation
