@inproceedings{81a5cdd9c95c46c4a056363e888eb567,
title = "A novel current dual-loop control strategy for three-phase grid-connected VSI with LCL filter",
abstract = "In grid-connected PV inverter system, grid voltage distortion gives rise to extra grid current harmonics. This paper first analyzes the shortage of inverter output current control scheme in suppressing the grid current harmonics caused by grid voltage distortion for grid-connected three-phase voltage source inverter (VSI) with LCL filter under d-q rotating frame. To damp these harmonics, we propose a novel dual-loop control scheme in which inverter output current inner loop is controlled by PI controller and grid current outer loop is regulated by the combination of PI and PR controller. PR controller yields a good performance in damping special order harmonics under this control scheme. Output admittance of the system is derived to analyze the impact of grid voltage distortion on grid current. Stability and effectiveness of this proposed strategy are verified with theoretical analysis as well as simulation and experimental results under 100kW PV inverter prototype.",
keywords = "Dual-loop, PV inverter, grid current harmonics, grid voltage distortion, output admittance",
author = "Tao Liu and Xiang Hao and Xu Yang and Jilong Liu and Bin Zhang and Lang Huang",
year = "2012",
doi = "10.1109/IPEMC.2012.6258818",
language = "英语",
isbn = "9781457720864",
series = "Conference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012",
pages = "626--630",
booktitle = "Conference Proceedings - 2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012",
note = "2012 IEEE 7th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2012 ; Conference date: 02-06-2012 Through 05-06-2012",
}