基于小型风力系统的单相电压型逆变器控制研究  

Research on Control Method of the Single Phase Voltage Source Inverter Based on Small-scale Wind Turbine

作　　者：喻莉[1] 茆美琴[1] 黄荣赓[1] 

机构地区：[1]教育部光伏系统工程研究中心合肥工业大学,安徽合肥230009

出　　处：《电气自动化》2010年第5期44-47,共4页Electrical Automation

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压型并网逆变器d-q控制算法。该方法将常应用于三相逆变器中的d-q算法应用于单相电压型并网逆变器。一般来说,应用d-q算法至少需要独立的两相。该文依据正交虚拟电路的概念建立逆变器的第二相,获得独立且正交的两相。理论上,逆变器的输出电压可以达到无穷大的开环增益,从而消除了逆变器在输出电流基波频率时的稳态误差。该文在Matlab-Smulink中对该系统的控制器进行了设计,并取得了较好的稳态及动态性能。This paper presents a d-q control algorithm used in single phase grid-connected voltage source inverter based on small-scale wind turbine. This method applies the well-known d-q control method usually used in three phase inverter to single phase voltage source grid-connected inverter. Traditionally,the implementation of d-q algorithm requires a minimum of two independent phases in the system. This paper proposes the use of differentiation to create the second phase on the basis of orthogonal virtual circuit. Theoretically,infinite loop gain is achieved in d-q rotating frame resulting in the elimination of the steady state error at the fundamental frequency of the inverter. The proposed controller is designed and validated through simulations using a DQ-frame average model in Matlab-Smulink and obtain a better dynamic performance.

关 键 词：单相电压型并网逆变器 单相d-q控制算法 正交虚拟电路 

分 类 号：TM614[电气工程—电力系统及自动化] TM464