×

Adaptive inductive power supply

  • US 9,013,895 B2
  • Filed: 07/27/2011
  • Issued: 04/21/2015
  • Est. Priority Date: 02/04/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for controlling operation of an inductive power supply system, the inductive power system including an inductive power supply having a controller and a tank circuit, the tank circuit being driven by a drive circuit at a variable operating frequency to transfer power inductively to a remote device, the method comprising the steps of:

  • establishing an inductive coupling between the inductive power supply and the remote device, wherein the remote device includes a secondary inductor in electrical communication with a load;

    adaptively adjusting a variable impedance element of the inductive power supply to adjust a resonant frequency of the tank circuit such that the resonant frequency is at or near the variable operating frequency, wherein said adaptive adjusting occurs while the remote device is inductively coupled with the inductive power supply; and

    adjusting the variable operating frequency of the inductive power supply, wherein adjusting the variable operating frequency of the inductive power supply includes adjusting an operating parameter of the inductive power supply with the controller, wherein said adjusting the variable operating frequency occurs while the remote device is inductively coupled with the inductive power supply.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×