The new combined Maximum Power Point Tracking algorithm using fractional estimation in photovoltaic systems

This paper presents an improved algorithm of quick and accurate Maximum Power Point Tracking (MPPT) algorithm which is based on Incremental conductance algorithm, Fractional Open Circuit Voltage and Short Circuit Current. The proposed algorithm estimates the short circuit current or open circuit voltage, following by using Fractional Short Circuit Current or Fractional Open Circuit Voltage algorithm to quickly determine point close to MPP. MPP will be accurately determined due to Incremental conductance algorithm. The proposed algorithm can identify quickly and correctly MPP when the environmental temperature and solar radiation change. The results of proposed algorithm are made by simulating with MATLAB/Simulink program and experimenting with kit DSpace DS 1104.