THE IMPACT OF SCR PROPULSION DRIVES ON GROUND FAULT CURRENTS

Although it has been acknowledged that using high resistance grounding can improve the safety and reliability of ships' power generation and distribution systems, regulatory bodies have not made it mandatory and the power and voltage levels involved have generally been too low to justify its added cost and complication. Grounding has been gaining in popularity, however, with the advent of the central power plant concept for electric propulsion and ships service power. The ground fault current for which systems must be designed is determined by the network's distributed capacitance and must be calculated with particular care for any system that includes SCR (semiconductor controlled rectifier) devices, such as cycloconverters. This discussion of the problem covers network boundaries, the calculation of capacitive charge current, the possible consequences of a ground fault, and the principles of grounding.

  • Availability:
  • Supplemental Notes:
    • Journal article
  • Authors:
    • Hensler, J
  • Publication Date: 1989

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Filing Info

  • Accession Number: 00657134
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM