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Multiple input single-stage inductive charger

  • US 6,548,985 B1
  • Filed: 03/22/2002
  • Issued: 04/15/2003
  • Est. Priority Date: 03/22/2002
  • Status: Expired due to Term
First Claim
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1. An inductive charger that is capable of using both single-phase and three-phase power sources, comprising:

  • a rectifier that can be connected to both single- and three-phase power sources;

    a capacitor connected across an output of said rectifier;

    an inverter that is connected to said rectifier and said capacitor and that includes a plurality of switching circuits;

    a series resonant tank circuit connected to an output of said inverter;

    a charge coupler and an inductive inlet including a transformer and a parallel resonant tank circuit for coupling energy to a load; and

    a controller that is connected to said rectifier and said inverter, that generates drive signals for controlling said switching circuits, that operates said inductive charger in a super-resonant mode and that regulates output power to said battery by modulating an operating frequency and output current of said inductive charger around an input frequency and an input current.

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