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CONTACTLESS POWER SUPPLY CONTROLLER AND CONTACTLESS POWER SUPPLY SYSTEM

  • US 20150380948A1
  • Filed: 02/04/2014
  • Published: 12/31/2015
  • Est. Priority Date: 02/08/2013
  • Status: Active Grant
First Claim
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1. A contactless power supply controller applied to a contactless power supply system that transfers power without contact between a primary side coil and a secondary side coil, whereinthe primary side coil and a primary side capacitor constitute a primary side resonance circuit andthe secondary side coil and a secondary side capacitor constitute a secondary side resonance circuit,the contactless power supply system including:

  • an AC voltage application unit that applies an AC voltage to the primary side resonance circuit;

    a secondary side rectifier circuit that converts an AC voltage outputted from the secondary side resonance circuit into a DC voltage; and

    a secondary side converter that converts the DC voltage outputted from the secondary side rectifier circuit into a predetermined DC voltage and outputs the predetermined DC voltage to a load,the contactless power supply controller comprising;

    a manipulation unit thatmanipulates the secondary side converter so that power outputted to the load is controlled to be a command value andmanipulates an input voltage of the primary side resonance circuit so that a current flowing in the primary side resonance circuit equals a product of a current flowing in the secondary side resonance circuit and a current coefficient, wherein the current coefficient is defined as a square root of a specific value and the specific value is an equivalent resistance of the secondary side resonance circuit divided by an equivalent resistance of the primary side resonance circuit.

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