Foreign object detection in wireless energy transfer systems

  • US 10,027,184 B2
  • Filed: 06/01/2016
  • Issued: 07/17/2018
  • Est. Priority Date: 09/09/2011
  • Status: Active Grant
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First Claim
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1. A wireless energy transfer system with foreign object debris detection, the system comprising:

  • a wireless energy transfer source comprising a source resonator configured to generate an oscillating magnetic field; and

    a foreign object debris detection system comprising;

    at least one magnetic field sensor; and

    at least one readout circuit configured to measure one or more electrical parameters of at the at least one magnetic field sensor,wherein the at least one magnetic field sensor is positioned within the magnetic field of the wireless energy transfer system; and

    wherein the foreign object debris detection system is configured to verify that foreign object debris has not moved onto or over the source resonator during generation of the oscillating magnetic field.

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