基于滑模变结构的解耦双同步参考坐标系锁相环研究  

Research on Decoupling Double Synchronous Reference Frame Phase Locked Loop Based on Sliding Mode Variable Structure

作　　者：刘根润 王璐 LIU Genrun;WANG Lu(The Affiliated Senior Technology School of Tianjin University of Technology and Education,Tianjin)

机构地区：[1]天津职业技术师范大学附属高级技术学校,天津300222 [2]国网天津电力培训中心,天津300181

出　　处：《电子器件》2023年第3期615-618,共4页Chinese Journal of Electron Devices

摘　　要：实际电网并不都是理想的状态,针对电网电压背景谐波以及不平衡工况下的相位信息获取问题,提出一种基于滑模变结构的解耦双同步参考坐标系锁相环(DDSRF-PLL)。传统锁相环(PLL)在这种复杂工况下不能快速实时检测电网相位信息,DDSRF-PLL通过提取电网电压正序基波分量,然后通过锁相环进行锁相。提出将滑模变结构引入锁相环之中,能够改善动态响应速度。实验验证了所提方案的有效性。The actual power grid is not always ideal. In order to solve the problem of obtaining phase information under voltage background harmonic and unbalanced conditions, a decoupled double synchronous reference frame phase locked loop(DDSRF-PLL)based on sliding mode variable structure is proposed. The traditional phase locked loop(PLL)can't detect the phase information of power grid in real time in this complex condition. DDSRF-PLL extracts the positive sequence fundamental component of power grid voltage, which is then phase-locked by PLL. Sliding mode variable structure is introduced into PLL,which can improve the dynamic response speed. Experimental results verify the effectiveness of the proposed scheme.

关 键 词：电压谐波 不平衡 滑模变 解耦双同步参考坐标系锁相环 

分 类 号：TM762[电气工程—电力系统及自动化]