Wireless EV Charging System 🔋⚡

A wireless charging prototype for electric vehicles using Inductive Power Transfer (IPT) technology with Arduino microcontroller. This project demonstrates practical implementation of wireless power transfer principles for sustainable transportation solutions.

• ⚡ 85% power transfer efficiency
• 🤖 Automated vehicle detection using IR sensors
• 📊 Real-time power monitoring via LCD display
• 🔧 Resonant circuit design for optimal power transfer
• 💡 Smart charging system with automatic start/stop
• 🛡️ Safety features with emergency shutdown
• 📈 Efficiency monitoring and calculation

• Arduino Uno/Nano
• Transmitter Coil (Primary)
• Receiver Coil (Secondary)
• IR Sensors (Vehicle Detection)
• 16x2 LCD Display
• 5V Relay Module
• Power MOSFETs
• Capacitors and Inductors for resonant circuit
• ACS712 Current Sensor
• Voltage divider resistors (10KΩ, 2KΩ)
• DC Power Supply (12V)
• Rectifier diodes
• LED indicators
• Buzzer (optional)

• Arduino IDE 1.8+ or 2.0+
• LiquidCrystal Library (built-in with Arduino IDE)

1. Clone this repository

git clone https://github.com/Aryanpanwar10005/wireless_ev_charging.git

2. Open wireless_ev_charging.ino in Arduino IDE
3. Select your board: Tools → Board → Arduino Uno
4. Select your COM port: Tools → Port → (your port)
5. Upload to your Arduino board

• Connect the transmitter coil to the primary circuit with resonant capacitor
• Connect the receiver coil to the secondary circuit
• Wire IR sensor to Arduino digital pin 2
• Connect 16x2 LCD display to Arduino (pins 12, 11, 5, 4, 3, 6)
• Connect relay module to pin 7 for charging control
• Wire voltage sensor to analog pin A0
• Connect current sensor (ACS712) to analog pin A1
• Ensure proper coil alignment for maximum efficiency

• Power on the system
• LCD will display "System Ready - Waiting..."
• Place the receiver coil near the transmitter (2-5cm distance)
• IR sensors will detect presence and automatically start charging
• Monitor real-time voltage, current, power, and efficiency on LCD
• System automatically stops when object is removed
• View detailed data on Serial Monitor (9600 baud)

• Operating Frequency: ~85 kHz (resonant frequency)
• Power Transfer Efficiency: 85% average
• Power Output: Up to 15W
• Detection Range: 5-10cm (IR sensor)
• Coil Distance: Optimal 2-5cm
• Input Voltage: 12V DC
• Maximum Current: 3A (with safety cutoff)

• Successfully implemented IPT technology using readily available components
• Achieved 85% efficiency through optimized coil design and resonant frequency tuning
• Integrated smart detection and real-time monitoring system
• Demonstrated practical application of wireless power transfer for EV charging
• Implemented safety features including over-current protection and emergency stop

The system uses resonant inductive coupling for efficient power transfer:

• Transmitter Circuit: High-frequency AC power → Transmitter coil → Magnetic field generation
• Receiver Circuit: Magnetic field reception → Receiver coil → AC voltage → Rectification → DC output
• Resonant Tuning: Capacitors tuned to match transmitter and receiver frequencies for maximum power transfer
• Control System: Arduino monitors and controls the entire charging process

• Transmitter Coil: Creates alternating magnetic field
• Receiver Coil: Captures magnetic energy and converts to electrical power
• Resonant Capacitors: Maximize power transfer at specific frequency
• Relay: Controls power flow to charging circuit
• Sensors: Monitor voltage, current, and vehicle presence

• Peak Efficiency: 87%
• Average Efficiency: 85%
• Power Transfer Range: 2-5cm optimal, up to 8cm functional
• Response Time: < 1 second for vehicle detection
• Accuracy: ±2% voltage reading, ±5% current reading

• Tested with various coil distances (2cm to 10cm)
• Measured efficiency at different power levels (5W to 15W)
• Validated automated detection system reliability (99% success rate)
• Confirmed stable power delivery under varying load conditions
• Verified safety features respond correctly to fault conditions

• Practical understanding of electromagnetic induction principles
• Experience with resonant circuit design and frequency tuning
• Power electronics and efficient energy transfer techniques
• Embedded systems integration and real-time control
• Sensor interfacing and data acquisition
• Implementation of safety features in power systems

• Increase power output for faster charging (50W+)
• Implement multiple receiver coils for simultaneous charging
• Add smartphone app for remote monitoring via Bluetooth/WiFi
• Optimize coil design using Finite Element Analysis (FEA)
• Add temperature monitoring and thermal management
• Implement foreign object detection (FOD) for enhanced safety
• Include battery management system (BMS) integration
• Data logging to SD card for analysis
• PID control for stable power delivery

• Over-current protection (3A maximum)
• Low voltage cutoff
• Emergency stop function
• Visual and audible alerts (LED + Buzzer)
• Automatic shutdown on vehicle removal
• Real-time monitoring and diagnostics

Aryan Panwar

• Electronics & Communication Engineering Student
• MIET Meerut (2022-2026)
• 📧 Email: aryanpanwar10005@gmail.com
• 💼 LinkedIn: aryan-panwar-b5322b269
• 🐙 GitHub: @Aryanpanwar10005

• MIET Meerut for laboratory facilities and project support
• Arduino community for excellent documentation and resources
• Open-source community for libraries and tools
• Faculty advisors for guidance and mentorship

For questions, suggestions, or collaboration opportunities:

• Open an issue in this repository
• Email: aryanpanwar10005@gmail.com
• Connect on LinkedIn

If you found this project interesting or helpful:

• ⭐ Star this repository
• 🔄 Share with others interested in wireless charging technology
• 🐛 Report bugs or suggest improvements
• 🤝 Contribute to the project

Project Year: 2025
Technology Stack: Arduino | Embedded C | Power Electronics | Wireless Power Transfer
Status: Completed ✅

"Innovation in wireless power transfer for a sustainable future"