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Arc fault detection for SSPC based electrical power distribution systems

  • US 20040156154A1
  • Filed: 02/12/2003
  • Published: 08/12/2004
  • Est. Priority Date: 02/12/2003
  • Status: Active Grant
First Claim
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1. An apparatus for arc fault protection in an electrical power distribution system of a vehicle, said apparatus comprising:

  • a load current input arranged to obtain a measurement of current being supplied to a load via a solid state power switching device of said electrical power distribution system;

    a load signature input arranged to obtain reference steady state and transient characteristics of the load supplied current waveforms, thereby obtaining a load signature, said load signature being a function of characteristics of said load being supplied current via said solid state power switching device and operating conditions of said solid state power switching device; and

    an arc fault detector arranged to compare said measured load current with said load signature, said arc fault detector outputting an arc fault indication signal when said measured current is outside an allowable range of said load signature.

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