摘要
针对LCL并网滤波器网侧电感电流和电容电流的双闭环控制策略,采用对电容电流闭环控制以增加系统阻尼,抑制系统振荡,提高系统的动态性能。对比分析网侧电感电流独立控制与电感及电容共同控制的特性,对电流双闭环控制策略进行系统建模和稳定性分析。仿真结果表明,该LCL拓扑与控制策略可有效抑制网侧电流谐振,具有良好的稳态特性和动态性能。
In this paper,we study the LCL grid filter mesh side inductance and capacitance current double closed-loop control strategy. The capacitive current closed-loop control is used to increase the system damping and to restrain system oscillation so as to improve the stability of the system. The characteristics of the inductance current independent control and the inductance and capacitance control of the network side are analyzed. Then the system modeling and the stability analysis are made for the current double closed loop control strategy. The simulation results show that the LCL topology and control strategy can suppress the current resonance effectively of the net side and have good stability and dynamic performance.
出处
《江南大学学报（自然科学版）》
CAS
2015年第5期538-543,共6页
Joural of Jiangnan University (Natural Science Edition)
基金
国家自然科学基金项目(51407084)
关键词
并网逆变器
LCL滤波器
电流双闭环控制
稳定性分析
grid-connected inverter
LCL filters
current double closed loop control
stability analysis
