Mathematical Modeling of Photovoltaic Module with Simulink

Abstract

Solar Energy is a good choice for electric power generation, since the solar energy is directly converted into electrical energy by solar photovoltaic modules Solar cells generates most of their electricity from direct sunlight. However, they also generate electricity on cloudy days and some systems can even generate very small amounts of electricity on bright moonlit nights. Individual solar cells typically only generate tiny amounts of electrical energy. To make useful amounts of electricity, these cells are connected together to make a solar module, otherwise known as a solar panel or, to be more precise, a photovoltaic module.The PV model plays an important role in the accuracy of the time simulation of the PV cell model. Modeling of PV cell involves the estimation of the I–V and P–V characteristics curves to emulate the real cell under various environmental conditions Photovoltaic (PV) model is used in a simulation study to validate the system design of a PV system. This paper presents modeling of Photo- voltaic (PV) module using MATLAB/SIMULINK. The model is developed on the basis of mathematical model of the PV module. The PV module of SN72-CELL-POLY CRYSTALLINE PV MODULE SN325P is selected for the experimental and technical data to analyze the developed model. The output current and power characteristic curves highly depend on some climatic factors such as solar radiation and temperature, are obtained by simulation for the selected module with the output power of 325 W .The objective of this paper is to develop a model to simulate the behavior of a photovoltaic cell. The achieved Voc voltage and current values from I-V and P-V characteristics are compared with module data sheet both models are implemented in MATLAB /SIMULINK. The “five-parameter model” is a performance model for photovoltaic solar cells that predicts the voltage and current output by representing the cells as an equivalent electrical circuit with radiation and temperature-dependent components. An important feature of the five-parameter model is that its parameters can be determined using data commonly provided by module manufacturers on their published datasheets.