DESIGN AND IMPLEMENTATION OF A STANDALONE SOLAR STREETLIGHT WITH30W CAPACITY, LITHIUM-ION BATTERY, AND PROXIMITY SENSOR FOR ENERGY-EFFICIENT LIGHTING

Abstract

Given the increasing recognition of renewable energy as a cleaner option, there has been a persistent transition towards non-conventional energy sources, particularly solar energy. This is geared towards reducing GHG emissions, coupled with the high cost of power supply and energy transmission losses, especially in Nigeria. A popular application of solar energy is in street lighting systems, where its usage is becoming increasingly widespread. In this project, we developed a stand-alone 30W streetlight unit with an intelligent feature for energy conservation. The solution was designed as a compact, integrated unit that includes a solar panel, LED bulb, battery energy storage system (BESS), energy controller (EC), boost converter, and motion sensor. The proposed solution allows the EC to control the LED lamp illumination when it detects no presence. The results showed an over 50% reduction in power consumption, improving the performance of the BESS and overall efficiency of the system