A MATLAB/GUI for Photovoltaic Modules Performance Simulations Based on Two-Diode Model

Abstract

Manufacturers of photovoltaic modules do not provide all the information necessary to predict their performance under different climatic conditions. This forces the development of mathematical models of behavior and the application of mathematical methods for the calculation of their associated parameters. A toolbox called PVMSim implemented in MATLAB/GUI is proposed in this paper. PVMSIm provides models allowing the simulation of photovoltaic modules. A two-diode model is used to represent the effect of irradiance and temperature on the V-I and V-P characteristic curves. The accuracy of PVMSim has been vaildated by applying the models to two mono-crystalline and multi-crystalline solar modules of different power ratings and manufacturers. The model PVMSim model accuracy was verified against the manufacturer’s datasheet. This paper shows that this tool is useful for designers and professionals who require an intuitive graphical interface for fast and accurate modeling, simulation and sizing of photovoltaic systems.

Modeling and Simulation of Simplified Quadruple Diode Solar PV Module Under Influence of Environmental Conditions and Parasitic Resistance

“…In this modified model, another diode is connected in parallel with the existing diode, while the rest of the circuit remains unchanged [22], [23]. This configuration is depicted in Figure 2.…”

“…Diode reverse saturation current (𝑰 𝒓𝒔 ) depends on the temperature coefficient, which includes (𝐾𝐾 𝑆𝐶 ) and (𝐾𝐾 𝑂𝑉 ). For the single model, an improved formula used to define the diode reverse saturation current with varying temperature values is illustrated in Equation ( 12) [22]. Figures 7 and 8 respectively represent the internal and external block diagram of diode reverse saturation current.…”