An Efficient Magnetic Coupler for UAV Wireless Charging | #Sciencefather #Researcherawards



Introduction

Wireless charging systems are emerging as a key enabling technology for the autonomous operation of unmanned aerial vehicles (UAVs). In this research, an efficient magnetic coupler is proposed to achieve tight magnetic coupling, precise alignment, and reduced energy loss during wireless charging. The integration of advanced sensing and mechanical design allows the UAV to autonomously align with the charging pad, enhancing both reliability and performance. Through optimized magnetic and circuit design, this study aims to establish a robust and efficient wireless power transfer framework for UAV applications.

Magnetic Coupler Design and Optimization

The proposed magnetic coupler utilizes a dual-coil tightly coupled structure that maximizes energy transfer efficiency while minimizing magnetic leakage. Optimization is performed using ANSYS Maxwell to ensure high coupling coefficients and minimal electromagnetic interference. This design contributes significantly to achieving a high charging power output and superior energy efficiency, making it ideal for UAV-based systems that require rapid and reliable charging.

Visual and Mechanical Alignment Mechanism

To ensure precise positioning during UAV landing, ArUco markers are integrated into the system, providing accurate visual guidance. Complementing this, a mechanical guide groove assists in the final alignment, achieving a landing deviation within ±12.5 mm. This hybrid alignment approach eliminates the need for additional positioning sensors, simplifying system complexity and reducing cost while maintaining exceptional precision.

Electromagnetic Shielding and Leakage Reduction

An enhanced electromagnetic shielding structure is incorporated into the coupler to minimize stray magnetic fields and leakage. This improvement not only enhances safety but also prevents interference with nearby electronics and communication systems. The reduction in magnetic leakage directly contributes to improved overall efficiency and environmental compatibility.

Circuit Topology and System Efficiency

A customized wireless charging circuit topology is developed to ensure constant-voltage charging for the UAV. The circuit is matched with the magnetic coupler to maintain stability across various operating conditions. This integrated approach enables the system to deliver a peak power of 78.8 W with an outstanding efficiency of 95.93%, showcasing the successful combination of electromagnetic and circuit design principles.

Simulation, Experimental Validation, and Results

Comprehensive simulation and prototype experiments validate the performance of the proposed system. Using ANSYS Maxwell, the electromagnetic characteristics are analyzed, followed by practical testing on a physical prototype. The results confirm the system’s capability to achieve high power transfer efficiency, tight coupling, and precise alignment, demonstrating its potential for deployment in future UAV wireless charging applications.

 Global Particle Physics Excellence Awards


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#Sciencefather, #Reseacherawards, #MagneticCoupler, #WirelessCharging, #UAVTechnology, #EnergyTransfer, #ANSYSMaxwell, #ElectromagneticShielding, #VisualGuidance, #ArUcoMarkers, #MechanicalAlignment, #WirelessPowerTransfer, #SmartCharging, #AutonomousSystems, #EnergyEfficiency, #ChargingInnovation, #UAVPowerSystems, #EngineeringResearch, #ElectromagneticDesign, #HighEfficiencyCharging, #PowerElectronics, #ResearchInnovation,

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