GUI Design with C# Windows Form Application for MPP Estimation

In this study, an interactive graphical user interface was developed to both facilitate the performance analysis of photovoltaic systems and serve educational purposes. The aim was to visualize how the maximum power point of a PV panel changes based on user-defined parameters. The interface was designed using the C# programming language and Windows Forms application. Users can enter key parameters such as ambient temperature and irradiance value via the keyboard. In the background, a mathematical model of the PV panel is executed to calculate the maximum power points for different temperature and irradiance conditions, and the results are displayed on the Graphical User Interface screen. The simulations conducted have shown that the user-friendly interface significantly simplifies the understanding of complex PV panel behaviours. The effects of varying atmospheric conditions on the location of the maximum power point and the overall efficiency of the panel can be clearly observed. The developed C# -based interface is considered an effective, low-cost, and accessible tool for teaching the fundamental principles of photovoltaic systems and enabling quick performance analysis.