单相电流型逆变器的d-q控制及仿真研究  

Research of D-Q Control and Simulation for Single Phase Current Source Inverters

作　　者：茆美琴[1] 喻莉[1] 徐斌[1] 黄荣赓[1] 

机构地区：[1]合肥工业大学,教育部光伏系统工程研究中心,合肥230009

出　　处：《系统仿真学报》2011年第12期2727-2731,共5页Journal of System Simulation

基　　金：科技部国际合作项目(2007DFA71340)

摘　　要：提出了一种基于小型风力发电系统的单相电流型并网逆变器d-q控制算法。该方法将常应用于三相逆变器中的d-q算法应用于单相电流型并网逆变器。一般来说,应用d-q算法至少需要独立的两相。依据正交虚拟电路的概念建立单相电流型逆变器的第二相,获得独立的两相。这种算法应用于本系统,理论上,逆变器的输出电流可以达到无穷大的开环增益,从而消除了逆变器输出电流基波分量的稳态误差。在Matlab-Smulink中对该系统的控制器进行了设计和仿真验证,结果表明:采用上述方法设计的控制器具有较好的稳态及动态性能。A d-q control method is proposed for a single phase grid-connected current source inverter used in small-scale wind turbine.In this method,the well-known d-q control algorithm usually used in three-phase inverters is applied to the single phase current source grid-inverter.In general,the implementation of d-q control algorithm requires a minimum of two independent phases in the system.Based on the concept of the orthogonal imaginary circuit,the second orthogonal imaginary phase is created for the single phase current source inverter to obtain two independent phases.Theoretically,infinite loop gain of the output current of the current source inverter is achieved in d-q rotating frame,which results in the elimination of the steady state error of the inverter output current at fundamental frequency.The proposed controller is designed and validated by simulations in Matlab-Smulink.The results show the controller can reach better steady and dynamic performances.

关 键 词：单相电流型逆变器 d-q算法 正交虚拟电路 稳态误差 动态性能 

分 类 号：TM614[电气工程—电力系统及自动化]