Nonlinear control and internal stability analysis of series-connected boost DC/DC converters in PV systems with distributed MPPT
Article
Overview
Research
Identity
Additional Document Info
View All
Overview
abstract
Distributed maximum power point tracking photovoltaic (PV) systems based on series-connected dc/dc converters are one of the most promising PV configurations for an enhanced security and efficiency in distributed generation systems. Most of the works reported so far in the literature for control and stability analysis of these configurations are based on small-signal ac models. This could be a significant limitation, as this kind of linearization produces a good approximation of the nonlinear model of series-connected dc/dc converters only at the operating point. However, PV systems must be controlled for a large set of operating points with a satisfactory performance and robustness. Moreover, stability analysis of series-connected dc/dc converters has not yet been widely discussed in previous research. Therefore, this article presents a nonlinear model of series-connected boost dc/dc converters and develops control and stability analysis to fill the gap in this emerging topic. A systematic experimental and numerical investigation is performed in order to validate the effectiveness of the proposed control approach in this study. © 2021 IEEE Electron Devices Society. All rights reserved.
publication date
funding provided via
published in
Research
keywords
Boost dc/dc converters; distributed maximum power point tracking (DMPPT); MPPT; nonlinear control; photovoltaic (PV) systems. Maximum power point trackers; Nonlinear analysis; Nonlinear systems; Solar power generation; Stability; Boost DC/DC converters; Distributed generation system; Internal stability; Maximum Power Point Tracking; Non linear control; Numerical investigations; Photovoltaic systems; Small signal AC models; DC-DC converters
Identity
Digital Object Identifier (DOI)
PubMed ID
Additional Document Info
start page
end page
volume
issue