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Inverter system

  • US 7,492,162 B2
  • Filed: 12/27/2006
  • Issued: 02/17/2009
  • Est. Priority Date: 07/22/2002
  • Status: Expired due to Fees
First Claim
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1. A current detection circuit of an inverter that converts DC input into AC output and supplies the AC output to a load, comprising:

  • a current detection part, provided at the DC input side of said inverter, that detects magnetic flux change, which occurs in a portion of circuit wiring passing through the current detection part of said inverter based on a change in a circuit current due to discharge occurring in the overall circuit wiring of said inverter, at the DC input side of said inverter, said current detection part detecting the change in the circuit current through the medium of the magnetic flux change; and

    a current change detection part that inputs a detected output of the current detection part and detects current change, the current change detection part including a rectification part that rectifies a fluctuation voltage obtained by the magnetic flux change and a smoothing part that smoothes a rectified voltage given from said rectification part.

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