A new MPPT method for Photovoltaic generation systems based on Hill Climbing algorithm

This paper presents a new method for MPPT in photovoltaic systems based on "Hill Climbing" algorithm. According to the proposed method cube of slope of power vs. voltage (P-V) curve is calculated in each calculation step. Through this calculation both the direction of photovoltaic\´s (PV) voltage change and the step size of this change are resulted without making any slope or sign control. Moreover, a way to apply this method in PV systems which are consisted of Ns in series and Np in parallel connection PV arrays with high installed nominal power is proposed. A DC to DC buck-boost converter is used in connection with PV arrays for achieving operation in maximum power point and keeping output voltage constant. The whole system is simulated using Matlab/Simulink and simulation results are presented and analyzed.