光伏并网系统的混成控制研究  

Study on Hybrid Control Method of Grid-connected Photovoltaic System

作　　者：李莎[1] 粟时平[1] 刘桂英[1] 范孝春[1] 黄飞[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410004

出　　处：《电气技术》2013年第1期14-17,共4页Electrical Engineering

摘　　要：针对光伏并网系统是一个非线性、不确定性、非纯一性的典型混成动态系统,本文将混成控制理论应用于光伏并网系统的最大功率点跟踪和并网逆变器控制策略的设计。首先简单介绍了混成控制理论,分析了光伏并网系统的混成特性,然后分别设计了最大功率点跟踪和并网逆变器混成控制决策,建立了基于混成自动机的光伏并网系统控制模型,最后通过仿真验证所建模型及方法的正确性和有效性。仿真结果表明该方法能够快速实现最大功率点跟踪,并能够实现并网电流精确跟踪电网电压。According to the grid-connected photovoltaic（PV）system with nonlinearities,uncertainties,heterogeneous characteristics and so on,the hybrid control theory is applied to the design of maximum power point tracking（MPPT） and grid-connected inverter control strategy in this paper.Firstly,the hybrid control theory is introduced and the hybrid characteristics of rid-connected PV system are analyzed.Then,the hybrid control decision of MPPT and grid-connected inverter are respectively designed and control model of rid-connected PV system based on hybrid automata is established.Finally,through the simulation results to prove the model and method is correct and effective.Simulation results show that the control method can achieve MPPT rapidly and grid-connected current tracking power grid voltage accurately.

关 键 词：光伏并网 混成控制 混成自动机 并网逆变器 

分 类 号：TM615[电气工程—电力系统及自动化]