MPPT System for Photovoltaic Module Connected to Battery Adapted for Unstable Atmospheric Conditions Using VHDL-AMS

This paper presents a novel maximum power point tracking (MPPT) algorithm used in photovoltaic (PV) module connected to a storage battery. The main aim of this algorithm is to maximize the PV array output power by tracking continuously the maximum power point (MPP) which depends on atmospheric conditions (panel temperature and irradiance). The full system is composed of a PV array, a storage battery and an electronic boost-type DC–DC converter inserted between the PV array and the storage battery. The proposed MPPT control algorithm used to control the boost DC–DC converter is intended to lead the PV array power to its maximum point by keeping the PV array voltage stable with little deviation. The modeling of this system is realized using the novel concept of “functional prototyping” based on Very high speed integrated circuits Hardware Description language–Analog and Mixed Signal (VHDL-AMS) which can be particularly useful to design and redesign complex system with multi-technologic aspect, and to optimize strategies of control. The usefulness of the proposed MPPT algorithm has been fully verified by digital simulation using Simplorer software, where the obtained results show that the proposed MPPT method can improve PV power system performances noticeably in steady and dynamic states.

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