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NON-CONTACT POWER FEEDER

  • US 20100033156A1
  • Filed: 08/07/2006
  • Published: 02/11/2010
  • Est. Priority Date: 09/01/2005
  • Status: Active Grant
First Claim
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1. A non-contact power feeder for supplying power by electromagnetic induction from a primary winding driven by an AC power supply to a secondary winding disposed with an air gap between the primary winding, further comprising:

  • a series capacitor connected in series with one of the primary winding and the secondary winding and a parallel capacitor connected in parallel with the other one of the primary winding and the secondary winding; and

    the capacitance value Cp of the parallel capacitor converted to the primary side is set to;


    Cp≈

    1/{2π

    f

    (xo+X)}and the capacitance value Cs of the series capacitor converted to the primary side is set to;


    Cs≈

    (x0+X)/{2π

    f

    (x

    x1+x

    x2+x

    x0)}where, f0 is the frequency of the AC power supply, x1 is the primary leakage reactance at the frequency F0 of the transformer comprising the primary winding and the secondary winding, x2 is the secondary leakage reactance converted to the primary side, x0 is the excitation reactance and X is x1 in case of connecting the parallel capacitor in parallel with the primary winding or x2 in case of connecting in parallel with the secondary winding.

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