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Power converter apparatus and method for controlling the same

  • US 20050036250A1
  • Filed: 08/05/2004
  • Published: 02/17/2005
  • Est. Priority Date: 08/07/2003
  • Status: Abandoned Application
First Claim
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1. A power converter apparatus that converts electricity supplied from a power source into a different form and outputs the electricity to an output line, the apparatus comprising:

  • a power section having a switching element, wherein the output line is connected to the power section, and wherein the power section converts electricity supplied from the power source into the different form and outputs the electricity to the output line by ON/OFF operation of the switching element;

    a ground-fault detector that detects a ground fault in the output line and outputs a ground fault detecting signal;

    a simulated ground fault generator that generates a simulated ground fault state in the output line;

    a judging section that judges whether the ground fault detecting signal is output within a predetermined time of the operation of the simulated ground fault generator, and judges whether the output of the ground fault detecting signal is stopped as the simulated ground fault generator stops operating; and

    a control section that controls the power section based on the judgment of the judging section, wherein, when the ground fault detecting signal is output within the predetermined time and the output of the ground fault detecting signal is stopped as the simulated ground fault generator stops operating, the control section causes the power section to continue outputting electricity, and wherein, when the ground fault detecting signal is not output within the predetermined time or when the output of the ground fault detecting signal is not stopped as the simulated ground fault generator stops operating, the control section stops the power section.

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