摘要
传统的比例积分(PI)控制器在光伏三相逆变器系统中存在无法实现无静差跟踪及谐振抑制效果较差的问题,为提高光伏三相逆变器系统谐振抑制效果及电流控制效果,提出一种基于PI与准比例谐振(QPR)双闭环控制的光伏三相逆变器系统控制策略。设计了基于PI与QPR双闭环控制的控制策略及控制框图,实现入网电流无静差跟踪,具有更好的入网电流波形及谐振抑制效果,提升了系统的稳定性。最后,通过在MATLAB/Simulink平台搭建仿真模型,验证了该控制策略的正确性和有效性。
The traditional proportional integral(PI)controller can't realize tracking without static error and has poor resonance suppression effect in photovoltaic three-phase inverter system.In order to improve the resonance suppression effect and current control effect of photovoltaic three-phase inverter system,a control strategy of photovoltaic three-phase inverter system based on PI and QPR double closed-loop control is proposed.The control strategy and control block diagram based on PI and QPR double closed-loop control are designed to realize no static error tracking of incoming current,which has better waveform of incoming current and resonance suppression effect,and improves system stability.Finally,the correctness and effectiveness of the control strategy are verified by simulation on MATLAB/Simulink platform.
作者
胡家喜
虞佳兴
李圣清
周攀
石东宁
HU Jiaxi;YU Jiaxing;LI Shengqing;ZHOU Pan;SHI Dongning(Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou 412001,China;Hunan Photovoltaic Smart Grid Control Engineering Research Center,Zhuzhou 412007,China;School of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《电工技术》
2021年第18期74-77,80,共5页
Electric Engineering
基金
国家自然科学基金(编号51977072)
国家重点研发计划(编号2018YFB0606005)
湖南省自然科学基金(编号2017JJ4024)
湖南省自然科学基金(编号2018JJ3128)。
关键词
比例积分控制器
QPR控制器
无静差跟踪
谐振抑制
proportional integral controller
QPR controller
no static error tracking
resonance suppression
