EFFICIENT BI-DIRECTIONAL DC/DC CONVERTER WITH MAXIMUM POWER POINT TRACKING IN PV APPLICATIONS

Abstract

This research introduces a non-isolated, efficient bi-directional DC/DC converter (NIMBC) that is optimized for a photovoltaic (PV) power system. It will enhance the efficiency of battery charging and discharging. In order to mitigate switching losses, suppress overvoltage, and optimize energy efficiency, the system implements state-of-the-art circuit technologies, including an RCD snubber circuit and a soft-switching (SS) circuit with zero-current switching (ZCS). A combination of the RCD snubber's capacity to maintain stable performance during turn-off phases and the SS circuit's capacity to reduce heat generation and energy dissipation during switch operation results in improved reliability. The converter also integrates a sophisticated Maximum Power Point Tracking (MPPT) technology that surpasses conventional methods such as Incremental Conductance (IC) and Radial Basis Function Network (RBFN) by effectively adapting to fluctuating solar conditions. This innovative method results in optimal energy extraction, reduced Total Harmonic Distortion (THD), and guaranteed exceptional power quality. The system has been validated through PSIM and MATLAB/Simulink simulations to address critical PV concerns, optimize energy flow, and reduce power losses, making it a dependable and efficient solution for the constantly evolving renewable energy industry.