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Wireless Power Transfer: Efficiency vs Distance and Alignment

Power ElectronicsMedium

Approx. component budget: Rs. 5,000 - 9,000

3D view of Wireless Power Transfer: Efficiency vs Distance and Alignment
3D view (illustration, not to scale)
Diagram of Wireless Power Transfer: Efficiency vs Distance and Alignment
Diagram (illustration, not to scale)

Objective

Measure how power transfer efficiency changes with coil gap, misalignment, frequency and coil size.

What you will build

A transmitter and receiver coil pair with a resonant capacitor network, a high-frequency driver (ZVS or half-bridge) and a rectifier at the output charging a small battery or an LED load.

Results you can expect

What you will learn

Inductive coupling, resonance, high-frequency drivers and the working of wireless chargers for phones and EVs.

Tools and notes

Oscilloscope (college lab), LCR meter, copper wire, Excel. Keep power low (under 20 W) and do not place metal objects near the coils while running.

Resume points from this project

Replace [x] with your own measured results. Write only what you really did.

Get the Rs. 99 project guide

A short guide that helps you decide and prepare. It contains:

  • A diagram and a 3D view of the project
  • How it works, in simple words
  • The main parts you will need
  • What lab you need and how hard it is
  • Results you can expect
  • Viva questions you should be able to answer

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