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Robust nonlinear controller design for three-phase grid-connected photovoltaic systems under structured uncertainties

Version 2 2024-05-30, 08:51
Version 1 2015-02-27, 16:10
journal contribution
posted on 2024-05-30, 08:51 authored by MA Mahmud, MJ Hossain, HR Pota, NK Roy
This paper presents a robust nonlinear controller design for a three-phase grid-connected photovoltaic (PV) system to control the current injected into the grid and the dc-link voltage for extracting maximum power from PV units. The controller is designed based on the partial feedback linearization approach, and the robustness of the proposed control scheme is ensured by considering structured uncertainties within the PV system model. An approach for modeling the uncertainties through the satisfaction of matching conditions is provided. The superiority of the proposed robust controller is demonstrated on a test system through simulation results under different system contingencies along with changes in atmospheric conditions. From the simulation results, it is evident that the robust controller provides excellent performance under various operating conditions. © 2014 IEEE.

History

Journal

IEEE transactions on power delivery

Volume

29

Pagination

1221-1230

Location

Piscataway, N.J.

ISSN

0885-8977

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2014, Institute of Electrical and Electronics Engineers

Issue

3

Publisher

Institute of Electrical and Electronics Engineers