Demonstration of degaussing by copper and HTS windings

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Abstract

Due to their permeability, merchant and naval vessels distort Earth’s magnetic field which leaves a magnetic signature. These anomalies in the magnetic field may be detected by mines leaving the vessel exposed. To avoid detection by magnetic sensors, the vessels magnetic signature can be reduced in several ways. One of them is degaussing: a technique where a set of on-board coils produces a magnetic field to cancel the magnetic signature. Modelling studies have shown that the performance of a degaussing system can be improved by replacing the copper with high temperature superconductor (HTS) coils in terms of volume, weight and energy efficiency. This study aims to compare the degaussing functionality of copper and HTS windings. A table-top demonstration model is presented which is equipped with both copper and HTS degaussing coils. The demonstrator is prepared by removing the permanent magnetisation. The two degaussing topologies are compared in terms of functionality, efficiency, controllability and mutual inductances.
Original languageEnglish
Number of pages11
Publication statusPublished - 2020
EventINEC 2020: 15th International Naval Engineering Conference and Exhibition - TU Aula / Virtual/online event , Delft, Netherlands
Duration: 5 Oct 20209 Oct 2020
Conference number: 2020
https://www.imarest.org/events/inec-2020

Conference

ConferenceINEC 2020: 15th International Naval Engineering Conference and Exhibition
Abbreviated titleINEC
Country/TerritoryNetherlands
CityDelft
Period5/10/209/10/20
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Degaussing
  • HTS
  • Superconductor
  • Magnetic signature
  • Deperming

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