电工技术学报2017，Vol.32Issue(16)：194-202,9.DOI:10.19595/j.cnki.1000-6753.tces.L70407
入网电压控制型逆变器直流分量的动态分析与消除
Dynamic Analysis and Elimination of DC Component of Grid Connected Voltage Controlled Inverter
摘要
Abstract
This paper focusses on the problem of direct current injection caused by voltage-controlled inverter connection. Based on the axial-voltage regulation single phase LCL inverter, the mathematical model of grid connected inverter has been built. This paper shows the details of mathematical analysis and formula derivation by analyzing the reasons of DC component indection. The result shows that the DC component has a nearly linear relationship with the voltage amplitude and frequency. Thus, this paper proposes the current deviation compensation (CDC) control strategy to diminish and eliminate the impacts of DC component. This strategy can compensate the injection direct current when the grid voltage and frequency fluctuation happen. The CDC control can also improve the performance of voltage-controlled inverter at the same time. Finally, simulation and experiment verify the effectiveness of the proposed control strategy.关键词
轴压调节/电压控制型/并网逆变器/直流分量/电流偏移补偿Key words
Axial voltage regulation/voltage control type/grid-connected inverter/DC component/current deviation compensation分类
信息技术与安全科学引用本文复制引用
高家元,赵晋斌,何超杰,张帅涛,屈克庆..入网电压控制型逆变器直流分量的动态分析与消除[J].电工技术学报,2017,32(16):194-202,9.基金项目
上海市自然科学基金项目(16ZR1413000)和上海绿色能源并网工程技术研究中心项目(13DZ2251900)资助. （16ZR1413000）
