Hardware Implementation of Multiple Energy Source Fed BLDC Motor

– In recent years, the growing demand for efficient, sustainable, and uninterrupted energy supply systems has led to the integration of multiple energy sources for motor-driven applications. This project presents a hardware-based implementation of a Brushless DC motor powered by multiple energy sources such as battery and external source with an automatic source-switching mechanism using solid state relays. The system is designed to ensure continuous operation of the BLDC motor by automatically shifting between energy sources based on their availability and priority logic. The control logic is implemented using a microcontroller that continuously monitors the voltage levels of each power source. When the primary source (Battery) drops below a preset of the system voltage, seamlessly switches to the next available (External source) using relays, thereby minimizing downtime and maximizing energy efficiency. A prototype circuit is built that includes a BLDC motor drive, relay switching circuit, voltage sensing units, and a microcontroller (Arduino UNO). The performance of the system is evaluated under various loading and power conditions, and the results is reliable and stable operation of the BLDC motor with minimal switching delay and no manual intervention. This project demonstrates a cost-effective and practical approach to energy redundancy in motor control applications, especially beneficial in areas with unstable power supply or remote installations relying on renewable energy sources.