DocumentCode :
3734531
Title :
Estimation of voltage parameters for grid-connected inverters
Author :
Tran Quang Tho;Truong Viet Anh;Le Minh Phuong
Author_Institution :
Faculty of Electrical and Electronics Engineering, Hochiminh City University of Technology and Education, Hochiminh city, Vietnam
fYear :
2015
Firstpage :
610
Lastpage :
615
Abstract :
The power quality of grid-connected inverters depends much on voltage parameters estimated by phase-locked loops. This paper proposes a robust technique for fast and accurate estimation of fundamental parameters of single-phase grid voltage under harmonics. The proposed technique bases on the least squares method using Levenberg-Marquardt algorithm to estimate the parameters of grid voltage. This does not base on interdependent loops offering stability and easy estimating process. It can also reject the negative effects caused by the presence of the dc offset as well as the harmonics. The simulation results in MATLAB/Simulink validated the robustness and accuracy of the proposed technique compared to the phase locked-loop basing on a second-order generalized integrator (QSG-SOGI).
Publisher :
ieee
Conference_Titel :
Advanced Technologies for Communications (ATC), 2015 International Conference on
ISSN :
2162-1020
Print_ISBN :
978-1-4673-8372-1
Type :
conf
DOI :
10.1109/ATC.2015.7388403
Filename :
7388403
Link To Document :
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