Regulation of Photovoltaic Voltage

TitleRegulation of Photovoltaic Voltage
Publication TypeJournal Article
Year of Publication2007
AuthorsXiao, W., W. G. Dunford, P. R. Palmer, and A. Capel
JournalIndustrial Electronics, IEEE Transactions on
Pagination1365 -1374
Date Publishedjun.
Keywordsnonlinear-time-variant characteristics, photovoltaic power systems, photovoltaic voltage regulation, stable control system, switching convertors, switching-mode converters, voltage control, Youla parameterization

In photovoltaic power systems, both photovoltaic modules and switching-mode converters present nonlinear and time-variant characteristics, which result in a difficult control problem. This paper presents an in-depth analysis and modeling to discover the inherent features of a photovoltaic power system. The method of successive linearization simplifies the nonlinear problem back to the linear case. This paper also presents the use of Youla parameterization to design a stable control system for regulating the photovoltaic voltage. The experimental and simulation results demonstrate the effectiveness of the presented analysis, design, and implementation.


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