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Single phase power supply for inductively coupled power transfer systems

  • US 8,953,340 B2
  • Filed: 02/28/2007
  • Issued: 02/10/2015
  • Est. Priority Date: 02/28/2006
  • Status: Active Grant
First Claim
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1. An inductively coupled power transfer (ICPT) system comprising:

  • a conductive path;

    a pick-up adapted to receive power from the conductive path;

    a power supply to energize the conductive path, the power supply comprising a single phase input for receiving single phase electric power at a utility supply frequency and a converter to provide an alternating current at an operating frequency greater than the utility supply frequency in the conductive path and the converter modulating the amplitude of the alternating current with respect to the utility supply frequency such that the amplitude of the alternating current varies;

    wherein the pick-up comprises an energy storage element adapted to provide a continuous supply of power to a load supplied thereby irrespective of the varying amplitude of the alternating current in the conductive path; and

    wherein the power supply modulates the alternating current to vary in amplitude between substantially zero and a maximum value.

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