三相并网逆变器直流分量瞬时抑制策略研究  

Study of DC Component Instantaneous Suppression for Three-phase Grid-connected Inverter

作　　者：吴雷[1] 徐鹏[1] 

机构地区：[1]江南大学,电气自动化研究所,江苏无锡214122

出　　处：《电力电子技术》2016年第2期56-59,共4页Power Electronics

基　　金：江苏省产学研创新项目(BY2012069)~~

摘　　要：针对三相并网逆变器直流分量波动问题,提出一种基于改进迭代比例积分(PI)控制的直流分量抑制策略。采用滑动平均滤波以工频周期为单位测取直流分量,利用迭代PI控制的周期积分特性反馈补偿空间矢量脉宽调制(SVPWM)脉宽,引入单神经元参数自调整提高迭代PI控制的动态性能和鲁棒性。最后,仿真和实验结果验证了所提抑制策略的有效性。In order to deal with the problems of fluctuation of DC bias in three-phase grid-connected inverters,a suppression method based on improved iteration proportional-integral（PI） control is proposed.The moving average filter is chosen to detect the DC component,and the space vector pulse width modulation（SVPWM） pulse width is compensated with cycle integration by iteration PI control.Meanwhile,a single neuron parameter self-tuning algorithm is introduced to enhance control＇s dynamic performance and robust.Finally,the simulation and experimental results prove the validity of this strategy by comparing with traditional method.

关 键 词：逆变器 电流检测 改进迭代比例积分控制 

分 类 号：TM464[电气工程—电器]