An Impedance Analysis based Active Damping Control Strategy for Parallel Voltage-Controlled Inverters

被引:0
作者
Li, Lifeng [1 ]
Chen, Laijun [1 ]
Zheng, Tianwen [1 ,2 ]
Guo, Yan [1 ]
机构
[1] Tsinghua Univ, State Key Lab Power Syst, Dept Elect Engn, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Sichuan Energy Internet Res Inst, Chengdu 610213, Sichuan, Peoples R China
来源
2018 37TH CHINESE CONTROL CONFERENCE (CCC) | 2018年
基金
美国国家科学基金会;
关键词
Voltage-Controlled inverters; LCL filter; resonance suppression; POWER-ELECTRONICS;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In view of the fact that inverters using LCL filter have been widely adopted in power systems, resonance caused by LCL filter in parallel-inverter-based system has become more and more common. In order to stabilize the operation of the paralleled inverter system and improve the waveform of the injected currents, a resonance suppression method is proposed. Firstly, based on the stability analysis of the corresponding mathematical model, the resonance frequency that occurs in a parallel-inverter-based system is investigated. Then, a notch filter is selected on the basis of the resonance characteristics, which is adopted to improve the damping of the system and enhance the stability. Simulation tests validate the stability analysis and the performance of the proposed control strategy.
引用
收藏
页码:8957 / 8962
页数:6
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