The amount of power generated by a PV depends on the operating voltage of the array. A PV’s maximum power point (MPP) varies with solar insulation and temperature.
Its V-I and V-P characteristic curves specify a unique operating point at which maximum possible power is delivered. At the MPP, the PV operates at its highest efficiency. Therefore, many methods have been developed to determine MPPT. For example: Ibrahimm and Houssing employed the look-up table on a microcomputer, to track MPP [1]. Midya et al. applied a dynamic MPP tracker to PV appliances [2]. Enslin and Snymam suggested the concept of “perturb and observe” (P&O)
[3], alternatives to which have been recently presented [4,5]. Koutroulis et al. [6] and Hussein et al. [7] offered the incremental conductance (IncCond) technique, since when, enhanced IncCond techniques have been proposed [8,9]. Several investigations have recently applied fuzzy logic to resolve this problem [10,11].