电气传动2017，Vol.47Issue(5)：33-38,6.DOI:10.19457/j.1001-2095.20170508
一种基于2倍频锁相的锁相环技术及并网应用
A Phase-locked Loop Technology Based on Double Fundamental Frequency Phase Lock and Its Application to Grid-connection
摘要
Abstract
Based on De-Re-coupling modulation idea,the mathematic model of matrix high frequency inverter was set up.Aiming at the unbalanced grid case,double fundamental frequency phase locked loop (DFF-PLL) technology was proposed,this method could lock the double fundamental frequency AC signal that generated by positive sequence voltage component,so it could eliminate the effect of negative sequence component,meanwhile,improve the detection speed and accuracy.Using balance current control method,grid-connected control system of matrix grid-connected inverter was designed.Using DFF-PLL and DSOGI-PLL two methods,the comparing simulation result of matlab software verifiy the correctness of the theoretical analysis and the feasibility of the grid-connected control system,also verify the DFF-PLL's superiority in speed and accuracy.关键词
不平衡电网/矩阵式高频链逆变器/并网控制/2倍频锁相环Key words
unbalanced power grid/matrix high frequency inverter/grid-connected control/double fundamental frequency phase-locked loop (DFF-PLL)分类
信息技术与安全科学引用本文复制引用
李建霞,闫朝阳,白鹤,贺红艳..一种基于2倍频锁相的锁相环技术及并网应用[J].电气传动,2017,47(5):33-38,6.基金项目
国家自然科学基金面上项目(61671403) （61671403）
燕山大学青年教师自主研究计划课题理工A类(14LGA009) （14LGA009）
