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CONVERTER CIRCUIT AND MOTOR DRIVE APPARATUS, AIR-CONDITIONER, REFRIGERATOR, AND INDUCTION HEATING COOKER PROVIDED WITH THE CIRCUIT

  • US 20110132899A1
  • Filed: 03/17/2009
  • Published: 06/09/2011
  • Est. Priority Date: 09/01/2008
  • Status: Active Grant
First Claim
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1. A converter circuit, including:

  • a rectifier that rectifies an AC voltage;

    a first converter section that is connected with the output of said rectifier and has a first reactor, a first switching element, and a first reverse current prevention element;

    a second converter section that is connected with the output of said rectifier, that has a second reactor, a second switching element, and a second reverse current prevention element, and that is connected with said first converter section in parallel;

    switching control means that controls said first and second switching elements; and

    a smoothing capacitor that is provided at the output of said first and second converter sections, whereinsaid switching control means switches the current mode of the current flowing through said first and second reactors to any of a continuous mode, a critical mode, or a discontinuous mode based on a predetermined condition.

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