中国电机工程学报Issue(27)：4559-4567,9.DOI:10.13334/j.0258-8013.pcsee.2014.27.002
基于阻抗分析法研究光伏并网逆变器与电网的动态交互影响
A Study of Dynamic Interaction Between PV Grid-connected Inverters and Grid Based on the Impedance Analysis Method
摘要
Abstract
The power quality and system stability in Distributed Generation (DG) systems are important issues with the far-ranging application of grid-connected inverters. The study of the dynamic interaction between PV Grid-Connected inverters and the grid based on impedance analysis was presented in this paper. The harmonic resonance due to the impedance interaction between PV inverters and the grid was analyzed in quantity, and the effect of the grid impedance on the stability of PV inverters was evaluated through the hardware-in-loop DG test-bed system. The impedance modeling of LCL type PV inverter was derived in the paper. In order to increase the phase margin of the impedance ratio, a novel active impedance control was proposed, which is beneficial to improve control robustness of PV inverters under different grid impedance conditions. The operation principle and design of the active impedance control were depicted, and the control performance was verified by the simulation evaluation.关键词
光伏并网逆变器/分布式发电系统/电压前馈/主动阻抗控制Key words
PV grid-connected inverter/distributed generation (DG) systems/voltage feed-forward/active impedance control分类
信息技术与安全科学引用本文复制引用
陈新,张旸,王赟程..基于阻抗分析法研究光伏并网逆变器与电网的动态交互影响[J].中国电机工程学报,2014,(27):4559-4567,9.基金项目
江苏省自然科学基金项目(BK20131360)。Project Funded by the Natural Science Foundation of Jiangsu Province (BK20131360) （BK20131360）
