Abstract
In this work, a computationally efficient approach for the simulation of a DC-DC converter connected to a photovoltaic device is proposed. The methodology is based on a combination of a highly efficient formulation of the one-diode model for photovoltaic (PV) devices and a state-space formulation of the converter as well as an accurate steady-state detection methodology. The approach was experimentally validated to assess its accuracy. The model is accurate both in its dynamic response (tested in full linearity and with a simulated PV device as the input) and in its steady-state response (tested with an outdoor experimental measurement setup). The model detects automatically the reaching of a steady state, thus resulting in lowered computational costs. The approach is presented as a mathematical model that can be efficiently included in a large simulation system or statistical analysis.
Highlights
Modeling the dynamic behavior of a photovoltaic power system is a challenging and actual topic due to its nonlinear nature and its dependence on environmental quantities [1]
This is achieved through a lean reformulation of the current-voltage relationship for a single-diode model, a state-space formulation for the DC-DC converter, and, most importantly, an effective strategy for steady-state detection
The model in the steady state can be integrated with state-of-the-art measurements and the forecasting of irradiance [17,18,19] for power plant-produced energy estimations, and, in general, to assess the electrical quantities of the system over a large timespan
Summary
Modeling the dynamic behavior of a photovoltaic power system is a challenging and actual topic due to its nonlinear nature and its dependence on environmental quantities [1]. It should be underlined that this work aims to create an efficient framework for the simulation of a DC-DC converter in the presence of a PV input; the steady-state detection approach is its core concept, since it is able to shorten drastically the computational times. This is important since a time domain analysis is performed to remark the nonlinear and time-varying behaviors of the PV source.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
