Electromagnetic Compatibility for Electric Vehicles

Power Transfer to Moving Vehicles

Currently the WPT transfer distance is in range of several centimeters. Among the technical challenges to overcome we can mention:

  • acceptable power transfer efficiency at high transfer range
  • increasing power level
  • misalignment tolerance
  • safety considerations

Coil-to-coil distance & 30 m working wavelength transfer efficiencies

2-turn copper ribbon coil (3cm wide, 0.14 mm thick) with d=60cm and 5 to 70 pF adjustable high voltage capacitor. The quality factor of the resonator is 1338 in the absence of the metallic plane and 1329 in the presence of a metallic plane.

Source: Safe Wireless Power Transfer to Moving Vehicles: Design of Radiationless Antenna

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