Voltage source isolation in wireless power transfer systems

  • US 10,075,019 B2
  • Filed: 11/21/2016
  • Issued: 09/11/2018
  • Est. Priority Date: 11/20/2015
  • Status: Active Grant
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First Claim
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1. A wireless power transmitter, comprising:

  • a power source;

    a first coil connected to the power source;

    a second coil connected in series to the first coil; and

    a third coil positioned in proximity to the second coil,wherein during operation of the wireless power transmitter;

    the power source applies a driving voltage to the first and second coils;

    the first coil generates a first magnetic field that transfers power to a receiver resonator;

    the second coil generates a second magnetic field that induces a voltage across the third coil; and

    the induced voltage across the third coil is applied to a component of the wireless power transmitter.

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