Schäfer, David; Doose, Jens; Rennings, Andreas; Erni, Daniel:
Conceptual analysis of UEP and ELFE in the Context of CP systems,
In: Electromagnetic Silencing Symposium 2012 (EMSS 2012), May 22-24, Centre for Ship Signature Management (CSSM), Naval Base Eckernförde, Germany, paper no. 9, 2012 - paper no. 9, 2012, invited presentation
2012Buchaufsatz/Kapitel in Sammelwerk
ElektrotechnikFakultät für Ingenieurwissenschaften
Titel:
Conceptual analysis of UEP and ELFE in the Context of CP systems,
Autor*in:
Schäfer, DavidUDE
LSF ID
52355
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Doose, Jens;Rennings, AndreasUDE
LSF ID
3322
ORCID
0000-0003-4606-3712ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Erni, DanielUDE
GND
1175897205
LSF ID
47126
ORCID
0000-0002-1467-6373ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in

Abstract:

Based on non-linear polarization curves, we simulate “Underwater Electric Potential” (UEP) signatures and “Extremely Low Frequency Electric fields” (ELFE) in the context of maritime corrosion protection (CP) systems (SACP and ICCP). In addition to the numerical simulations (using FEM) also analytic calculations of simplified scenarios are carried out to accomplish conceptual analysis. In our talk we present an overview of our research approaches on the following topics: • Optimized ICCP settings for silent running. • ELFE by means of shaft vibrations in the context of “Shaft Grounding” (SG) and “Active Shaft Grounding” (ASG). • Near-field modulation due to propeller revolution and the “smoothing effect” of polarization resistance at sharp edges. • Principle influence of dipole-orientation on the associated UEP signature in shallow waters. • Inverse modeling of UEP signatures via multipole arrangements including a “destructive interference” approach. • Simulation of corrosion related magnetic fields based on UEP simulations, considering the electric currents flowing back through the electron conductor(foremost the hull). • Influence of the polarization curves – with respect to their non-linearity – on the UEP signature in the specific context of scaled models.