Next Article in Journal
Field Measurements of Residential Energy Consumption and Indoor Thermal Environment in Six Chinese Cities
Next Article in Special Issue
MPPT for Photovoltaic Modules via Newton-Like Extremum Seeking Control
Previous Article in Journal
Electric Vehicle Scenario Simulator Tool for Smart Grid Operators
Previous Article in Special Issue
On the Evaluation of Solar Greenhouse Efficiency in Building Simulation during the Heating Period
Article Menu

Export Article

Open AccessArticle
Energies 2012, 5(6), 1900-1926;

Modeling of Step-up Grid-Connected Photovoltaic Systems for Control Purposes

Instituto Tecnologico Metropolitano, Medellin 05001000, Colombia
Universidad Nacional de Colombia, Medellin 05001000, Colombia
Author to whom correspondence should be addressed.
Received: 27 February 2012 / Revised: 16 May 2012 / Accepted: 1 June 2012 / Published: 18 June 2012
(This article belongs to the Special Issue Solar Energy Systems and Materials)
Full-Text   |   PDF [3562 KB, uploaded 17 March 2015]   |  


This paper presents modeling approaches for step-up grid-connected photovoltaic systems intended to provide analytical tools for control design. The first approach is based on a voltage source representation of the bulk capacitor interacting with the grid-connected inverter, which is a common model for large DC buses and closed-loop inverters. The second approach considers the inverter of a double-stage PV system as a Norton equivalent, which is widely accepted for open-loop inverters. In addition, the paper considers both ideal and realistic models for the DC/DC converter that interacts with the PV module, providing four mathematical models to cover a wide range of applications. The models are expressed in state space representation to simplify its use in analysis and control design, and also to be easily implemented in simulation software, e.g., Matlab. The PV system was analyzed to demonstrate the non-minimum phase condition for all the models, which is an important aspect to select the control technique. Moreover, the system observability and controllability were studied to define design criteria. Finally, the analytical results are illustrated by means of detailed simulations, and the paper results are validated in an experimental test bench. View Full-Text
Keywords: photovoltaic system; control systems; non-minimum phase analysis; modeling; grid-connected photovoltaic system; control systems; non-minimum phase analysis; modeling; grid-connected

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Trejos, A.; Gonzalez, D.; Ramos-Paja, C.A. Modeling of Step-up Grid-Connected Photovoltaic Systems for Control Purposes. Energies 2012, 5, 1900-1926.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top