Maximum Power Evaluation Method for the Bifacial Photovoltaic Modules Using Reflective System

The bifacial PV module is a module that obtains maximum power from sunlight incident on the front and rear sides, and the maximum power varies depending on the ground and installation environment on the rear side. Using these characteristics, we created a reflector that can simulate the ground environment to find the condition that the incident light on the rear side is maximized and to find the economical and time-benefit of the existing IEC standard method. First, the reflectors were installed and evaluated at regular interval for the distance between the reflectors and the modules, and it was found that the maximum power value was saturated over a certain distance, and the same result was obtained for the two modules with different ratings. I think this is one of many ways to replace the IEC standard method based on the current single-sided solar module, and we will further improve the evaluation method through experiments on various ground and installation environmental conditions.