摘要
通过建模与仿真,分析研究了三相光伏并网发电系统的控制策略。在一般工况下,建立了太阳能电池的通用数学模型,采用基于电压扰动干扰观测法进行最大功率点跟踪;搭建了三相光伏并网发电系统的结构,并采用空间矢量PWM控制器对逆变器进行并网控制;最后在Matlab/Simulink软件上进行了仿真试验,仿真结果表明该模型能够实现最大功率追踪控制,并能使并网侧逆变器输出的电压、电流跟踪给定参考值,实现功率因数可控的要求。
The control strategy of three-phase PV grid-connected system is analyzed and studied through modeling and simulation. Firstly, a universal mathematical model of solar cells is established under general condition, then the algorithms based on perturb ＆ observe of voltage to track maximum power point are used. Secondly, the structure of three-phase PV grid-connected system is set up,and the space vector PWM controller is used to control the grid-connected inverter. Finally,the Matlab/Simulink simulation results show that MPPT （maximum power point tracking） method is effective and inverter output track reference value can meet the requirements of controllable power factor.
出处
《陕西电力》
2013年第5期17-20,33,共5页
Shanxi Electric Power
关键词
光伏并网
建模
最大功率点跟踪
并网控制
grid-connected photovoltaic
modeling
maximum power point tracking
grid control
