基于QPCI控制的微电网并网逆变器控制技术研究  

Single-phase Grid-connected Inverter Control Technology for Microgrid Based on QPCI Control

作　　者：胡兵轩 任庭昊 车洵[2] 覃禹铭 陈挺 张代新[2] 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)

机构地区：[1]贵州电网有限责任公司遵义供电局,贵州遵义563000 [2]南京南瑞继保电气有限公司,江苏南京210000

出　　处：《智慧电力》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）~~

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.

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 

分 类 号：TM464[电气工程—电器]