基于谐波传递函数的单相电压源型整流器建模与稳定性分析  

Modeling and stability analysis of single phase voltage source converter rectifier based on harmonic transfer function

作　　者：贾东强[1] 刘文军 李宏川 肖万芳[1] 李彬[1] 夏向阳[3] 李云丰 JIA Dongqiang;LIU Wenjun;LI Hongchuan;XIAO Wanfang;LI Bin;XIA Xiangyang;LI Yunfeng(State Grid Beijing Electric Power Company,Beijing 100031,China;State Grid Hunan Electric Power Corporation Limited Economical&Technical Research Institute,Changsha 410007,China;School of Electrical&Information Engineering,Changsha University of Science&Technology,Changsha 410114 China)

机构地区：[1]国网北京市电力公司,北京100031 [2]国网湖南省电力有限公司经济技术研究院,湖南长沙410007 [3]长沙理工大学电气与信息工程学院,湖南长沙410114

出　　处：《电力科学与技术学报》2022年第5期73-79,共7页Journal of Electric Power Science And Technology

基　　金：国网北京市电力公司科技项目(52020221003U);国网湖南省电力有限公司科技项目(5216A220000X)。

摘　　要：单相VSC具有广泛的应用,研究其运行特性对于谐波产生机理、谐波抑制以及稳定性提升具有重要意义。首先,针对单相VSC整流器主电路结构,采用二阶广义积分器构建了同步锁相环环节。其次,根据直流电压外环控制和单位功率因数运行要求,建立采用准比例谐振控制器的内环控制方程。然后,基于时变周期系统运行轨迹线性化原则,构建主电路和控制系统谐波传递函数矩阵,推导5阶导纳矩阵模型,并分析相关因素对导纳特性和系统稳定性的影响。最后,采用电磁暂态仿真模型验证所建立模型和理论分析的正确性。Single phase VSC has a wide range of applications,and studying its operating characteristics is of great significance for harmonic generation mechanism,harmonic suppression and stability improvement.Firstly,the second-order generalized integrator is used to construct the synchronous phase-locked loop for the main circuit structure of single-phase VSC rectifier.Secondly,according to the requirements of DC voltage outer loop control and unit power factor operation,the equation of inner current control loop is established using the quasi-proportional-resonant controller.Thirdly,based on the linearization principle of the running trajectory of the time-varying period system,the harmonic transfer function matrix of the main circuit and control system is constructed,and the fifth-order admittance matrix model of VSC is deduced,and the influence of related factors on admittance characteristics and system stability is analyzed.Finally,the electromagnetic transient simulation model is used to verify the correctness of the analytical model and theoretical analysis.

关 键 词：单相VSC 阻抗模型 谐波传递函数矩阵 托普利兹矩阵 稳定性分析 

分 类 号：TM464[电气工程—电器]