A Hybrid Variable Step Size MPPT Method Based on P&O and INC Methods

Maximum power point tracking (MPPT) is an essential part of the Photovoltaic (PV) systems to obtain the possible maximum power. Perturb and observe (P&O) is one of the most important MPPT methods because of its simplicity and ease of implementation. In this paper, a modified hybrid variable step size MPPT algorithm based on P&O and incremental conductance (INC) methods is proposed to obtain MPP from the PV system by changing the step size automatically. Proposed algorithm can be an effective solution to the low tracking speed and the oscillations around the MPP problems. Advantages of the proposed algorithm has been verified by the simulation results.