An Maximum Power Point Tracker of Photovoltaic Module Arrays Based on Improved Firefly Algorithm

In this paper, an improved firefly algorithm (FA) was proposed for application on photovoltaic module arrays (PVMAs) with partial modules under shading so that the maximum power point tracking (MPPT) could be implemented. Firstly, a new model of high voltage step-up converter developed executing MPPT PVMA. For energy storage inductor converter, architecture coupled adopted switch did not need to operate excessive duty cycle, which increase gain and reduce ripple output at same time. To prevent within PVMA generate more than one peak power-voltage (P-V) characteristic curve, where conventional only track local (LMPP) PVMA, tracker, based FA, in paper. Such tracker perform automatic online adjustment FA iteration parameters, according slope P-V and, time, 0.8 times (MPP) array standard test condition (STC), serving as initial implementing global (GMPPT). Lastly, actual results were applied verify indeed contained low-ripple voltage. The also GMPP faster further improve power-generating efficiency