Implementation of Incremental Conductance MPPT with Direct Control Method Using Cuk Converter

This paper presents simulation of incremental conductance (IncCond) maximum power point tracking (MPPT) used in solar array power systems with direct control method. The main difference of the proposed system to existing MPPT systems includes elimination of the proportional-integral control loop and investigation of the effect of simplifying the control circuit. The resultant system is capable of tracking MPPs accurately and rapidly without steady-state oscillation, and also, its dynamic performance is satisfactory. The IncCond algorithm is used to track MPPs because it performs precise control under rapidly changing atmospheric conditions. MATLAB and SIMULINK were employed for simulation studies. Simulation results indicate the feasibility and improved functionality of the system. IndexTerms: incremental conductance (IncCond), maximum power point tracking (MPPT), photovoltaic (PV) system.