虚拟振荡器控制的新型逆变器无线并联方案  

A Novel Virtual Oscillator Control in Wireless Parallel Connected Inverters

作　　者：屠勇[1] 苏建徽[1] 杨向真[1] 杜燕[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,安徽省合肥市230009

出　　处：《中国电机工程学报》2016年第15期4184-4191,共8页Proceedings of the CSEE

基　　金：国家自然科学基金青年科学基金项目(51307042;51407057);安徽省自然科学基金青年科学基金项目(1408085QE97)~~

摘　　要：该文提出了一种基于虚拟振荡器特性的具有自适应功能的逆变器无线并联控制方案,该方案使逆变器对外等效表现为一种RLC谐振电路和一个具有受控电流源与可控线性电阻双重特性的自适应模块并联的性质。虚拟振荡器的自适应模块通过端电压与输出电流协调控制,使并联系统各单元的输出可以同步运行,逐步减少环流。利用该方法控制3台容量相同的单相逆变器并联运行,而且在负载突变过程中能够保持端电压幅值与频率基本稳定,使得通过该方法控制的并联系统对外表现的电压特性更硬。论文通过Matlab/Simulink仿真验证了该方案的可行性。This paper presented a virtual oscillator based control for parallel connected inverters with adaptive characteristic. This control method made inverters equivalent performances as a RLC resonance circuit parallel with an adaptive module, which had dual nature with controlled current source and controlled linear resistance. In virtual oscillator, the value of adaptive module could be controlled by terminal voltage and output current, made outputs of the models in parallel system could be synchronous operation, reduce circular current gradually. By this mean, three single-phase inverters for the same capacity parallel operation was realized. And it could maintain the amplitude and frequency of terminal voltage when load changed, make output voltage characteristics of parallel system controlled by this method harder. The feasibility of control method was confirmed by Matlab/Simulink.

关 键 词：虚拟振荡器:逆变器控制 并联 

分 类 号：TM46[电气工程—电器]