Investigation of internal heating power depending on operating point of Si single crystal PV modules

Solar cells generate electricity by obtaining energy from sunlight, but their heat generation characteristics with respect to the load have not been analyzed. There are also PVT(Photovoltaic and Thermal) systems that also use solar heat to improve overall efficiency. In this system, the solar cells are cooled, which improves their electrical characteristics. To achieve more precise control of this system, it is important to estimate the heat generated by the solar cells themselves. Therefore, this paper analyzes the heating power inside the solar cell for the temperature changes by operating point of the solar cell. This simulation and experimentation enabled us to predict the internal heating of the solar cells. By utilizing these characteristics, we can aim to increase the efficiency of solar cells and the overall efficiency of PVT systems.