7.4 KVA Electric Vehicle charger using RFID Security

The need for safe and effective charging infrastructure has increased as a result of the growing popularity of electric cars (EVs). In this study, an microcontroller-controlled 7.4 kVA electric vehicle charger with RFID-based authentication and overcurrent protection is designed and implemented. By confirming RFID credentials prior to turning on power delivery, the recommended approach makes sure that only authorized users can enter the charging station. The system includes a sensor for real-time current monitoring for increased safety. To avoid electrical risks, the microcontroller immediately disconnects the power relay if the charging current over 35A. Live feedback on current usage and charging status is provided by a display module. The firmware, which was created with IDE, effectively handles user identification, relay control, and safety features. High authentication accuracy, steady power control, and dependable overcurrent protection at 35A are demonstrated by experimental validation conducted under a variety of operational situations. The solution is appropriate for both home and commercial EV charging applications since RFID incorporation improves security. To increase overall functionality and user experience, future improvements might include cloud-based monitoring, mobile app integration, and smart grid compatibility.