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UID:e4d4def745d9584b7a7d8b0741300122
DTSTAMP:20260609T101117Z
SUMMARY:PhD Defense: Enhanced modelling\, active damping strategies\, and d
 esign analysis to improve electrodynamic thrust self-bearing machines by A
 drien ROBERT (MEED)
DESCRIPTION:Magnetic levitation has emerged as an attractive alternative to
  conventional mechanical bearings in high-speed rotating machines\, as it 
 eliminates contact-induced friction\, wear\, and thermal stresses. However
 \, most levitated systems rely on active magnetic bearings\, which require
  multiple sensors\, power electronics\, and control loops\, leading to inc
 reased complexity and volume. To overcome these limitations\, electrodynam
 ic suspension offers a promising approach by exploiting the interaction be
 tween permanent magnets and motion-induced currents to generate restoring 
 forces. This principle is implemented in the electrodynamic thrust self-be
 aring machine (EDTSBM)\, which combines passive axial levitation and torqu
 e production within a single compact structure.This thesis advances the un
 derstanding and development of the EDTSBM through modelling\, control\, an
 d design contributions. An extended electromechanical model was developed\
 , accounting for position-dependent inductance variations and nonlinear fl
 ux evolution\, thereby revealing additional force components and the influ
 ence of current injection on suspension behaviour. Building on these findi
 ngs\, novel stabilization strategies were proposed\, including active damp
 ing through current injection and sensorless estimation of rotor axial pos
 ition and velocity\, enabling stable operation over the entire speed range
  without dedicated damping system. Finally\, the thesis investigates alter
 native rotor topologies incorporating magnetic circuits and establishes a 
 unified framework for their design and comparison.&nbsp\;Membres du jury :
 Prof.&nbsp\; B. Dehez (UCLouvain) - PromoteurProf. N.Moës (UCLouvain) - P
 résidentProf. E. De Jaeger (UCLouvain) - SecrétaireDr. J. Van Verdeghem 
 (UCLouvain)&nbsp\;Prof. M. Bekemans (UCLouvain)&nbsp\;Prof. E. Severson (U
 niversity of Minnesota)Prof. W. Gruber (Johannes Kepler University of Linz
 )Soutenance publique également accessible par visio-conférence via le li
 en (TEAMS) :&nbsp\;https://teams.microsoft.com/l/meetup-join/19%3ameeting_
 NzFlZDBmNTctOWRjNC00YWRlLTg4NWYtM2EzNjk2NWMzNGJl%40thread.v2/0?context=%7b
 %22Tid%22%3a%227ab090d4-fa2e-4ecf-bc7c-
URL:https://www.uclouvain.be/en/calendar/immc
DTSTART;TZID=Europe/Brussels:20260710T161500
DTEND;TZID=Europe/Brussels:20260710T181500
LOCATION:Place Ste Barbe 1348 Louvain-la-Neuve
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