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Methods for steering a magnetic field for smart wireless power transmission

  • US 10,320,201 B2
  • Filed: 02/08/2018
  • Issued: 06/11/2019
  • Est. Priority Date: 11/07/2014
  • Status: Active Grant
First Claim
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1. A system for wireless power transmission comprising:

  • a receiver coil having an axis;

    a gimbal arrangement;

    a transmitter coil having an axis and mounted to the gimbal arrangement;

    a first actuator coupled to the gimbal arrangement for changing an azimuth angle of the axis of the transmitter coil;

    a second actuator coupled to the gimbal arrangement for changing an elevation angle of the axis of the transmitter coil;

    read-only memory storing unit vectors of each magnetic field at any given position in a defined space;

    a computer system programmed to control the first and second actuators and an amplitude of current to be supplied to the transmitter coil to generate a resultant magnetic field having a magnetic field line which is located along the axis of the receiver coil; and

    a current source for supplying current having the respective amplitude to the transmitter coil,wherein the computer system is further programmed to receive location data representing the position and orientation of the receiver coil, retrieve unit vectors from the read-only memory look-up table, and determine the amplitude required to multiply each unit vector in order to achieve a desired orientation and intensity of the resultant magnetic field.

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