分布式发电系统中并网逆变器比例谐振控制  

Proportional resonance controller of grid-connected inverter for distributed generation system

作　　者：杨勇[1] 赵春江[2] 

机构地区：[1]苏州大学城市轨道交通学院,江苏苏州215021 [2]上海电力学院太阳能研究所,上海200090

出　　处：《电力自动化设备》2011年第11期51-55,共5页Electric Power Automation Equipment

基　　金：江苏省高校自然科学研究项目(10KJD480004)~~

摘　　要：比例谐振(PR)控制器能够在静止坐标系下对交流信号实现无静差控制,将此控制器应用于分布式发电系统中并网逆变器。采用电网电压定向的矢量控制和PR控制,实现了d轴和q轴电流的解耦控制以及功率任意可调。对静止坐标系下的PR控制器进行了静态和动态实验。最后,对电网电压不平衡时PR控制器的三相并网逆变器进行了实验,并与同步旋转坐标系的PI控制策略进行对比实验。实验结果表明:采用PR控制器的三相并网逆变器有很好的静、动态性能和抗电网电压不平衡能力。As PR（Proportional Resonance） controller achieves zero steady-state error for AC signal in stationary reference frame,it is applied to the three-phase grid-connected inverter of distributed generation system.The grid voltage oriented vector control and PR control are adopted to realize the decoupled control of d-axis current and q-axis current and the adjustable power factor.The static and dynamic experiments are carried out in stationary reference frame for PR controller.The control strategy of PR controller is tested for three-phase grid-connected inverter under unbalanced grid voltage and compared with the control strategy of PI controller in synchronously rotating reference frame.Experimental results show that,the three-phase grid-connected inverter with PR controller has better steady / dynamic performance and higher ability against grid-voltage unbalance.

关 键 词：比例谐振控制器 分布式发电系统 矢量控制 逆变器 

分 类 号：TM464[电气工程—电器]