Sistem Kendali, Pemantauan Pengisian Baterai dan Metode Coulumb Counting

Abstract

Renewable energy, such as Solar Power Plants (PLTS) and Wind Power Plants (PLTB), offers solutions to reduce dependence on conventional energy sources. This research aims to design an input voltage monitoring system for batteries based on the Internet of Things (IoT) using the Blynk application, equipped with an Automatic Transfer Switch (ATS) that ensures automatic power source switching from the main grid (PLN) to the battery. Battery charging is regulated to prevent overcharging, thus extending battery life. The research method involves system testing across various battery charging and discharging durations. Battery charging tests were conducted for 14,400 seconds (4 hours) to reach a 100% State of Charge (SoC), while discharging tests lasted 120 minutes to reach an SoC of 0% using a 42W lamp load. The Coulomb Counting method accurately estimates battery charging time, and the ATS system performs well in switching power sources without outages under both constant and variable loads. This system can optimize renewable energy usage, with minimal switching time and stable power management.