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Fault current limiting in an electrical power network

  • US 7,554,301 B2
  • Filed: 02/05/2007
  • Issued: 06/30/2009
  • Est. Priority Date: 02/11/2006
  • Status: Active Grant
First Claim
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1. An electrical generator arrangement for an electrical power network, comprising:

  • the electrical generator including a field coil arrangement which, in use, creates magnetic flux within the electrical generator arrangement;

    a field current supply means, operable, in use, to control the field current in the field coil arrangement;

    and a monitor means operable to monitor electrical power network conditions to detect the onset of a fault current;

    the field current supply means being responsive, in use, to the onset of a fault current to reduce the generated current to the electrical power network, by control of the field current, wherein said field current supply means is operable to reverse the polarity of the control voltage applied to the field coil arrangement.

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