×

Methods and apparatus for providing a sufficiently stable power to a load in an energy transfer system

  • US 7,062,331 B2
  • Filed: 05/01/2002
  • Issued: 06/13/2006
  • Est. Priority Date: 10/19/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A first side energy transfer system for transferring power from a power supply having a primary winding located on a first side of a physical boundary to a variable load having a secondary winding located on a second side of the physical boundary over a power channel created between the primary and secondary windings, the first side energy transfer system comprising:

  • a primary winding electrically coupled to the power supply to generate a magnetic field based on input power provided by the power supply, the magnetic field permeating the physical boundary for magnetically coupling a secondary winding to the primary winding to form a power channel to provide power to a variable load;

    an excitation control circuit coupled to the primary winding to detect on the primary winding an indication of at least one of changes in a variable load and changes in the relative position of the primary winding and a secondary winding; and

    a primary control circuit electrically coupled to the primary winding and to the excitation control circuit to regulate a primary voltage across the primary winding based on the detected indication for providing a sufficiently stable output power to the variable load notwithstanding at least one of changes in a load and changes in a relative position of the primary winding and a secondary winding;

    wherein the excitation control circuit includes a rectifier coupled to the primary winding and a comparator coupled to the rectifier that compares a voltage in the primary windimg to a threshold voltage, wherein the rectifier at least partially rectifies the primary voltage for comparison with the threshold voltage by the comparator.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×