Dynamic Wireless Charging for (UAV) using Inductive Coupling

A Simulink/Simscape model demonstrating an Inductive Power Transfer (IPT) system designed for wireless drone battery charging

This project simulates a wireless power transfer (WPT) system tailored for Unmanned Aerial Vehicles (UAVs). The model demonstrates the conversion of DC power to high-frequency AC, the wireless transmission of energy across an air gap via magnetic resonance, and the rectification back to DC for battery charging.

System Topology Includes:

• Input Stage: A DC Voltage Source (12V) connected to a full-bridge inverter using IGBT/Diode switches.
• Switching Control: Pulse Generators operating at a switching frequency of 85 kHz (Period: 1/85000s), a standard frequency for SAE J2954 wireless charging standards.
• Coupling Stage: Uses Mutual Inductance and Linear Transformer blocks to model the transmitting (Tx) and receiving (Rx) coils with specific coupling coefficients.
• Compensation: Series RLC branches included to model the resonant compensation networks (tuning the coils to the resonant frequency).
• Output Stage: A bridge rectifier (Diode-based) to convert the high-frequency AC back to DC for the load.
• Instrumentation: Comprehensive Voltage and Current measurements with Scope blocks for analyzing input/output waveforms and efficiency.

Simulation Details:

• Solver: Discrete Tustin/Backward Euler (via powergui).
• Sample Time: 50e-6 seconds.

4. Key Features

• High-Frequency Inversion: Models the switching transients of IGBTs at 85 kHz.
• Magnetic Coupling: Simulates the behavior of loose coupling between drone landing pads and onboard receivers.
• Power GUI Integration: setup for discrete simulation of specialized power systems.
• Waveform Analysis: Pre-configured scopes to view Inverter Output Voltage, Primary/Secondary Current, and Rectified DC Voltage.

5. Installation & Usage

1. Download the DynamicWirelessChargingofdrone.slx file.
2. Ensure you have MATLAB and Simulink installed.
3. Required Toolbox: You must have the Simscape Electrical (formerly SimPowerSystems) toolbox installed to run the sps_lib blocks.
4. Open the file and run the simulation.
5. Double-click the "Scope" blocks to visualize the wireless power transfer performance.