基于双阶广义积分的单相光伏并网逆变器灵活功率控制  

A Second Order Generalized Integrator Based Flexible Power Control for Single-Phase Photovoltaic Grid-Connected Inverter

作　　者：杨勇[1] 李世华 朱彬彬[1] 陶雪慧[1] 赵方平 王志冰[3] 

机构地区：[1]苏州大学城市轨道交通学院,江苏省苏州市215137 [2]艾伏新能源科技(上海)股份有限公司,上海市闵行区201112 [3]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2014年第4期952-958,共7页Power System Technology

基　　金：国家自然科学基金资助项目(51377112;51307113)~~

摘　　要：针对单相光伏并网逆变器的特点,提出一种在静止坐标系下单相光伏并网逆变器的灵活功率控制方法。通过双阶广义积分算法得到与电网电压同相以及滞后电网电压90°的2个正交电网电压。在静止两相坐标系下通过比例准谐振控制实现对给定电流的快速跟踪。实验结果表明:该控制方法可实现有功功率和无功功率的解耦控制,系统具有良好的静态、动态性能。According to the feature of single-phase photovoltaic （PV） grid-connected inverter, a flexible power control method for single-phase PV grid-connected inverter in stationary coordinate system is proposed. Two orthogonal voltages, one of which is of the same phase as grid voltage and the phase of another one lags behind the grid voltage by 90°, are obtained by second order generalized integral （SOGI） algorithm, and the fast tracking of given current can be implemented by proportional quasi-resonant （PQR） controller in the two-phase stationary coordinate system. Experimental results show that using the proposed control method the decoupling control of active and reactive power can be realized, and the control system possesses good static and dynamic performances.

关 键 词：单相光伏并网逆变器 灵活功率控制 双阶广义积分 比例准谐振 解耦控制 

分 类 号：TM721[电气工程—电力系统及自动化]