基于双闭环控制的并网逆变器研究  

Study of Buck-Boost grid-connected inverter based on double-loop control

作　　者：岳舟[1] 

机构地区：[1]湖南人文科技学院通信与控制工程系,湖南娄底417001

出　　处：《电源技术》2013年第10期1846-1848,1880,共4页Chinese Journal of Power Sources

基　　金：湖南省教育厅资助项目(10C 0832)

摘　　要：为了使并网电流总谐波畸变率低于5%,优化逆变器的性能,基于三相B uck-B oost并网逆变器,采用双闭环控制策略。详细分析了逆变器的拓扑结构和工作原理,利用状态空间平均法建立了系统数学模型,并详细阐述了双闭环控制原理。利用M atlab/S im ulink工具对控制系统进行了仿真研究,仿真结果验证了该变换器的优点和双闭环控制策略的有效性。In order to make the output current total harmonic distortion rate of less than 5% and optimize performance of inverters, double-loop control strategy based on three phase Buck-Boost inverter was adopted in this paper. Buck-Boost grid-connected inverter could obtain AC output voltage higher than or lower than input DC voltage. The operation principle was analyzed in detail and the mathematics model was built by the state-space average method. The double-loop control theory was described. The simulation studies of the control system were constructed by Matlab/Simulink tool. Simulation results were given to verify the validity and effectiveness of the proposed inverter.

关 键 词：Buck—Boost变换器 并网逆变器 双闭环控制 仿真 

分 类 号：TM743[电气工程—电力系统及自动化]