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IMPEDANCE TUNING

  • US 20150051750A1
  • Filed: 08/14/2014
  • Published: 02/19/2015
  • Est. Priority Date: 08/14/2013
  • Status: Active Grant
First Claim
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1. A wireless power transfer system, comprising:

  • a power transmitting apparatus configured to wirelessly transmit power;

    a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus; and

    a controller connected to the power transmitting apparatus and configured to;

    receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus; and

    adjust a frequency of the transmitted power based on the measured phase difference.

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