摘要
为了保证微电网中并网逆变器在基频附近也具有较好的动稳态特性,提出一种准比例复数积分(QPCI)控制策略。首先结合单相并网逆变器数学模型进行静稳态理论分析;其次采用延时法虚拟坐标系和全通滤波器实现基于QPCI控制的单相并网逆变器的直接电流控制;对2种控制方案进行对比,发现采用全通滤波器实现QPCI控制简单易行。最后通过仿真和实验进行有效性验证,结果表明QPCI控制的单相并网逆变器在基频附近具有良好的静稳态性能。
In order to ensure that the grid-connected inverter in microgrid has better dynamic and steady-state characteristics near the fundamental frequency,this paper proposes a new control strategy based on quasi-proportional complex integral.Firstly,the static and steady state theory analysis is carried out by using the mathematical model of single-phase grid-connected inverter.Secondly,two control schemes using delay virtual coordinate system and all-pass filter is used to realize the direct current control of the single-phase grid-connected inverter based on QPCI control.After comparing the two schemes,it is found that the realization of single-phase QPCI control using the all-pass filter is simple and feasible.Finally,the simulation and experiment shows that the single-phase grid-connected inverter based on QPCI control has good steady performance near the fundamental frequency.
作者
胡兵轩
任庭昊
车洵
覃禹铭
陈挺
张代新
HU Bingxuan;REN Tinghao;CHE Xun;QIN Yuming;CHEN Ting;ZHANG Daixin(Zunyi Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Zunyi 563000,China;Nanjing Nanrui Jibao Electric Co.,Ltd.,Nanjing 210000,China)
出处
《智慧电力》
北大核心
2020年第1期23-27,41,共6页
Smart Power
基金
国家自然科学基金资助项目（61503180）~~
关键词
QPCI控制
虚拟静止坐标系
全通滤波器
直接电流控制
并网逆变器
quasi-proportional complex integral control
virtual stationary coordinate system
all-pass filter
direct current control
grid-connected inverter
