光伏系统中扰动观察法的控制方法研究  

Study of Perturb & Observe Control Methods in Photovoltaic System

作　　者：薛家祥[1] 钟良文[1] 张思章[1] 张红卫[1] 廖天发[1] 张晓莉[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《电气传动》2013年第3期40-44,共5页Electric Drive

基　　金：广东省部产学研(2011B090400261);广东省科技攻关(2010B010900003);江门市科技计划(2011010012417)

摘　　要：针对光伏电池的输出特性,以Boost电路为硬件平台分析了直接控制、PI控制这两种扰动观察法的控制方法的原理。通过Simulink建立电路仿真模型,对扰动观察法两种控制方法的最大功率点跟踪效果进行对比。以1.5 kW的两级光伏并网逆变器实验样机完成相关实验,实验波形和分析证明了扰动观察法的控制方法的有效性。According to the output characteristics of photovoltaic cells, theory analysis of Perturb ＆ Observe （P＆O） control methods including direct control and PI control was made based on the hardware platform of Boost circuit. Then simulation models of P＆O on Boost circuit were established by Simulink. Through the simulation result, comparison of the two P＆O control methods was carried out. Further, the developed 1.5 kW dual-stage photovohaic grid-connected inverter based on Boost circuit was applied for experiment to verify the effectiveness of the presented P＆O control methods.

关 键 词：扰动观察法 直接控制 PI控制 BOOST电路 

分 类 号：TM615[电气工程—电力系统及自动化]