An Improved MPPT Incremental Conductance Algorithm Using T-S Fuzzy System for Photovoltaic Panel

Maximum Power Point Tracking (MPPT) is an essential technique that tracks the maximum power point of photovoltaic panel. Since, conventional MPPT algorithm uses a fixed step to get the optimal value of the duty cycle, many drawbacks occur. Thus, the purpose of this presented work is to suggest an improved MPPT technique which enhances the choice of the variable step size of the duty cycle and therefore improves the performances of photovoltaic system. Indeed, the concept of this new algorithm is to compute the variable step according to the slope value of Power-Voltage characteristic for photovoltaic panel. Then, it provides the appropriate value of duty cycle. In this paper, the concept and the features of the conventional Incremental conductance algorithm are examined. Then, the improved MPPT algorithm which relies on fuzzy logic technique is explained. Simulation results are provided to exhibit the efficiency of the proposed MPPT approach.