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

Mahmud,MA, Hossain,MJ, Pota,HR and Roy,NK 2014, Robust nonlinear controller design for three-phase grid-connected photovoltaic systems under structured uncertainties, IEEE transactions on power delivery, vol. 29, no. 3, pp. 1221-1230, doi: 10.1109/TPWRD.2014.2309594.

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Title Robust nonlinear controller design for three-phase grid-connected photovoltaic systems under structured uncertainties
Author(s) Mahmud,MAORCID iD for Mahmud,MA orcid.org/0000-0002-5302-5338
Hossain,MJ
Pota,HR
Roy,NK
Journal name IEEE transactions on power delivery
Volume number 29
Issue number 3
Start page 1221
End page 1230
Publisher Institute of Electrical and Electronics Engineers
Place of publication Piscataway, N.J.
Publication date 2014-06
ISSN 0885-8977
Keyword(s) Grid-connected PV system
matching conditions
partial feedback linearization
robust nonlinear controller
structured uncertainty
Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
POWER POINT TRACKING
SLIDING MODE CONTROLLER
INVERTER
RECTIFIER
VOLTAGE
Summary 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.
Language eng
DOI 10.1109/TPWRD.2014.2309594
Field of Research 090608 Renewable Power and Energy Systems Engineering (excl Solar Cells)
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Institute of Electrical and Electronics Engineers
Persistent URL http://hdl.handle.net/10536/DRO/DU:30070121

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