Regulation of Photovoltaic Voltage
Weidong Xiao; Dunford, W.G.; Palmer, P.R.; Capel, A.
Industrial Electronics, IEEE Transactions on
Volume 54, Issue 3, June 2007 Page(s):1365 - 1374
Digital Object Identifier   10.1109/TIE.2007.893059
Summary: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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