Pemodelan Maximum Power Point Tracking pada Inverter Hybrid Pada Sistem Pengisian Baterai VRLA 12 V 100 Ah Dari Sumber PV

Abstract

The hybrid inverter is capable of managing various energy sources such as PV and the grid. One of the modes of the hybrid inverter is the battery charging mode using the Maximum Power Point Tracking (MPPT) technique. This technique aims to maximize the power efficiency generated by PV by dynamically adjusting to the maximum power point. This study aims to develop a battery charging system model for a 12 V 100 Ah Valve Regulated Lead Acid (VRLA) battery using Simulink MATLAB. The charging system consists of a DC/DC converter within the hybrid inverter, controlled by the MPPT technique for efficient charging. The VRLA battery charging process involves three stages: constant current, constant voltage, and float charging. The MPPT technique is applied during the constant current stage to utilize the maximum output power from the PV. The charging system model is compared with the battery charging mode of commercially available off-grid hybrid inverters for validation. The results show that the MPPT-based hybrid inverter charging model was successfully developed, and the application of the MPPT technique during the constant current stage improved the PV power tracking efficiency. Validation of the MPPT performance in the off-grid hybrid inverter’s battery charging mode showed consistency with the simulation results. This study can be used for simulating the latest MPPT methods and intelligent techniques for VRLA battery charging.