Design of A Hybrid Renewable Energy System with IoT Monitoring and Battery Management

Two seasons that the Philippine archipelago experiences are: the wet and dry seasons. The country's mean annual rainfall ranges from 965 to 4,064 millimeters, according to PAGASA. The Philippine archipelago also takes advantage of abundant sunlight. From the data gathered from the NREL, the Philippines' average solar irradiance measured in watts per square meter is around 128-203, which provides a 4.5-5.5-kilowatt-hour per square meter daily power generating capacity. The research focuses on designing a Hybrid Renewable Energy System Harvester with IoT Monitoring and Battery Management. Specifically, the research aims (i) to utilize the use of solar energy and the droplets from the rain to generate electricity; (ii) to create a Dual-Input Single Output (DISO) system that will incorporate the two input hybrid renewable sources (Solar and Piezo), and to output a single DC source; (iii) to create an IoT based system for monitoring and acquiring data; and (iv) to create a battery management system to monitor and protect the battery from overcharging. Three tests were done for the prototype: controlled and uncontrolled trials for the Piezoelectric Rain Energy harvester and voltage regulation for the Hybrid System. The highest voltage output measured from the piezo is 3.29V. The data from the voltage regulation shows that the voltage of the battery is gradually increasing, which means that the Hybrid System supplies voltage to the battery.