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Wireless power transfer based on 2D routing.

Zhouyi Wu1,2, Haochen Yu1, Dominique Schreurs2

  • 1Laboratory of Applied Research on Electromagnetics (ARE), College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China.

Scientific Reports
|October 15, 2022
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Summary
This summary is machine-generated.

This study introduces a dual-frequency wireless power transfer method for efficient, controllable energy delivery across a 2D plane using switchable power units. It achieves high transmission efficiency, enabling applications like device charging and robot power systems.

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Area of Science:

  • Electrical Engineering
  • Wireless Power Transfer
  • Electromagnetics

Background:

  • Traditional wireless power transfer methods often lack directional control and efficiency.
  • Existing systems struggle with powering multiple devices or dynamic routing on a plane.

Purpose of the Study:

  • To propose a novel dual-frequency wireless power transfer (WPT) method.
  • To enable controllable power routing to various positions on a 2D plane using magnetic coupling resonance.

Main Methods:

  • A 2D plane composed of uniform power supply units, each with two resonant states (active and inactive).
  • Wireless control circuits to switch and combine units for directional power transfer.
  • Circuit modeling, analysis, and electromagnetic simulations.
  • Experimental implementation and testing of the WPT system.

Main Results:

  • Demonstrated controllable routing and power delivery via magnetic coupling resonance.
  • Achieved a maximum transmission efficiency of 93.3% with a single receiver and 5 coupled units.
  • Validated applicability for both single-receiver and multiple-receiver scenarios.

Conclusions:

  • The proposed dual-frequency WPT method offers high flexibility and efficiency.
  • Potential applications include indoor device charging and powering free-moving robots in industrial settings.