Tunable wireless energy transfer systems

  • US 10,673,282 B2
  • Filed: 01/14/2019
  • Issued: 06/02/2020
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
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First Claim
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1. A source for a wireless power transfer system comprising:

  • sensing and measurement circuitry configured to process signals associated with a source resonator and a source impedance matching network comprising one or more tunable components;

    a PWM (pulse width modulation) generator coupled with at least two power transistors of an amplifier coupled with the source impedance matching network, wherein the PWM generator is configured to control a driving signal to drive the source resonator using the at least two power transistors; and

    a controller coupled with the sensing and measurement circuitry to receive measured signals from the sensing and measurement circuitry, wherein the controller is configured to control a component value or an operating point of at least one of the one or more tunable components, and the controller is configured to modify operation of the PWM generator based on the measured signals to modify at least a phase of the driving signal while changing power delivered to the source resonator.

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