Tunable wireless power architectures

  • US 10,734,842 B2
  • Filed: 08/31/2017
  • Issued: 08/04/2020
  • Est. Priority Date: 08/04/2011
  • Status: Active Grant
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First Claim
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1. A wireless energy receiving device for wirelessly receiving energy to drive a load, comprising:

  • a device resonator;

    a rectifier electrically coupled to a load and to the device resonator, the rectifier comprising controllable switching elements; and

    a controller coupled to the rectifier,wherein the controller is configured to control the switching elements of the rectifier to adjust an output voltage, current, or power presented to the load; and

    wherein in a first mode of operation of the system, the controller is configured so that, to approximately maintain the output voltage, current, or power presented to the load despite changes in power delivered to the device resonator by a source resonator, the controller changes a duty cycle or a phase of the switching elements of the rectifier to cause the output voltage, current, or power presented to the load to approach a target voltage demand, current demand, or power demand associated with the load.

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