摘要
基于LCL滤波器状态变量反馈实现有源阻尼具有控制灵活、鲁棒性强的优点,但需要配备高精度传感器,这增加了系统成本并降低了系统可靠性。为此,该文提出采用负带通滤波器等效二阶微分环节反馈进网电流实现有源阻尼的方法,相比于反馈其他状态量,能够减少传感器的个数并增加系统可靠性;相比于已有的单电流反馈有源阻尼,具有较好的动态特性以及优秀的谐波抑制能力。仿真及实验结果证明,所提策略在各个方面均能取得令人满意的结果。
The active damping(AD)methods based on LCL filter states variables feedback have the advantages of simple implementation and strong robustness,but it needs to be equipped with high-precision sensors,which increases the cost of the system and reduces the reliability of the system.This paper proposed an implementation method of AD based on grid current feedback.Compared with other ADs,it can save the number of sensors,reduce the cost of the system,and increase the reliability of the system.Based on the stability and dynamic characteristics of the system,the parameter design method of the proposed strategy was presented.Simulation and experimental results prove that the proposed control strategy can achieve satisfactory results in all aspects compared with traditional methods.
作者
李明明
肖华锋
LI Mingming;XIAO Huafeng(School of Electrical Engineering,Southeast University,Nanjing 210096,Jiangsu Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第10期3729-3737,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(51577033)
江苏省自然科学基金项目(BK20171360)
国网安徽省电力有限公司科技项目(521205180020)。
关键词
LCL滤波器
谐振抑制
负带通滤波器
参数设计
LCL-filter
resonance damping
negative band pass filter
parameters design
