Authors : Sabir Messalti and Abdelghani Harrag
Abstract: In this study, a new Maximum Power Point Tracking (MPPT) controller for PV systems performances improvement has been proposed. The proposed method uses the Incremental Conductance (IC) MPPT algorithm with adaptive duty cycle step. The classical IC MPPT algorithm is widely used in many applications due to its simplicity. However, IC MPPT is characterized by several low performance factors (high ripple, response time and oscillation around the MPP affecting the convergence speed, prone to failure especially when high changes in irradiance). To face the aforementioned drawbacks, modified IC MPPT algorithm with variable step size has been developed in this study. The proposed method was developed and tested successfully using a boost converter connected to a Sun Module (SW) 240 W. Simulations are provided in several aspects using MATLAB/Simulink Model for different atmospheric conditions. A comparative study between the proposed variable step size and fixed step size IC MPPT method has been accomplish. Results and analysis are presented in which many contribution have been demonstrated in terms of response time, MPPT tracking, reducing of oscillation.
Sabir Messalti and Abdelghani Harrag, 2017. A New Adaptive Step Size IC MPPT Controller for High-Performance of PV Systems. Journal of Engineering and Applied Sciences, 12: 7696-7702.