Bruno Dehez
Recent publications

Research group(s): MEED

PhD and Post-doc researchers under my supervision:

Traction2020, Ecoptine
Virginie Kluyskens

The aim of the project "TRACTION 2020 - Development of a high efficiency and high reliability railway traction" is the reduction of the consumption of electrical energy in railway traction. The hope is to improve by about 5% the efficiency of the traction chain, while also keeping in mind criteria like reliability, price and life cycle cost. In this context, our research concerns more specifically two components of the traction chain: (i) the electric motor converting the electrical energy into mechanical energy: a synchronous reluctance motor and (ii) the magnetic gear inserted between the motor and the axle of the boogie. Our objective is to propose the optimal electromagnetic design for these two components.

The aim of the project "ECOPTINE - Energy aCcumulation for Optimization of electrical Traction INfrastructure Efficiency" is to ensure an optimal (and renewable) source of energy for rail traction, thus allowing a gain in terms of cost and performance. It aims to design an energy accumulation and storage solution (via a flywheel) as well as a system for connection to the energy distribution network. In this context our research concerns the passive magnetic bearing system of the flywheel.

Development of self-bearing machines with hybrid magnetic suspension and PCB windings for cutting-edge applications
Joachim Van Verdeghem

The aim of this project is to propose and validate the first self-bearing electric machine that requires no sensors, power electronics and control specifically dedicated to the rotor magnetic levitation while operating both at low and high speeds.

Comparison of slotted and slotless PM machines
Nicolas Verbeek


Study of slotless homopolar hybrid active magnetic bearings
Guillaume Colinet

Active magnetic bearings (AMB) generate a contact-free guiding of a rotor by actively controlling the current flowing in a winding. Compared with other bearings, AMB have the advantages to create very low friction as well as to operate without lubrication and mechanical wear.
Among the various topologies of AMB, the one under study allows to theoretically remove the iron losses in the rotor which makes
it attractive for applications in the vacuum or at very high-speed.

Nouvelles topologies et stratégies de commande de machines autoportantes à suspension électrodynamique
Adrien Robert

A fully passively bearingless motor using electrodynamic suspension have been developped by Joachim Van Verdegheme and Bruno Dehez. During my master thesis, I modeled the behaviour of the machine using ferromagnetic materials which add variation of the inductances coefficients. These materials should increase the perfomances of the motor, and add new possibilities of control. My thesis aims to find the best way to add these ferromagnetic materials in the design of the motor and take advantage of these new control possibilities to improve the machines performances.

Recent publications

See complete list of publications

Journal Articles

1. Dehez, Bruno; François, Guillaume. Impact of slit configuration on eddy current and supply current losses in PCB winding of slotless PM machines. In: IEEE Transactions on Industry Applications, Vol. 1, no.1, p. 1-1 (2022). doi:10.1109/TIA.2022.3179253.

2. Beauloye, Louis; Dehez, Bruno. Permanent Magnet Electrodynamic Suspensions Applied to MAGLEV Transportation Systems: A Review. In: IEEE Transactions on Transportation Electrification, , p. 1-1 (2022). doi:10.1109/tte.2022.3193296 (Accepté/Sous presse).

3. Verbeek, Nicolas; Baudart, François; Dehez, Bruno. Loop Formulation in Hybrid Analytical Modeling for Solving 2-D Nonlinear Magnetostatic Problems. In: IEEE Transactions on Magnetics, Vol. 57, no.8 (2021). doi:10.1109/tmag.2021.3083418.

4. Van Verdeghem, Joachim; Severson, Eric Loren; Dehez, Bruno. Hybrid Active-Passive Actuation Approach of Passively Levitated Thrust Self-Bearing Machines. In: IEEE Transactions on Industry Applications, Vol. 57, no. 6, p. 7035 - 7045 (2021). doi:10.1109/TIA.2021.3094179.

5. Van Verdeghem, Joachim; Dehez, Bruno. Fully Passively Levitated Self-Bearing Machine Implemented within a Reaction Wheel. In: IEEE Transactions on Industry Applications, Vol. 57, no. 6, p. 5782 - 5795 (2021). doi:10.1109/tia.2021.3100015.

6. Timmermans, Sébastien; Dehez, Bruno; Fisette, Paul. Multibody-Based Piano Action : Validation of a Haptic Key. In: Machines, (2020). doi:10.3390/machines8040076.

7. Van Verdeghem, Joachim; Kluyskens, Virginie; Dehez, Bruno. Experimental Investigations on Passively Levitated Electrodynamic Thrust Self-Bearing Motors. In: IEEE Transactions on Industry Applications, Vol. 55, no. 5, p. 4743 - 4753 (2019). doi:10.1109/TIA.2019.2926659.

8. Kluyskens, Virginie; Van Verdeghem, Joachim; Dehez, Bruno. Experimental Investigations on Self-Bearing Motors with Combined Torque and Electrodynamic Bearing Windings. In: Actuators, Vol. 8, no. 2, p. 48 (2019). doi:10.3390/act8020048.

9. Van Verdeghem, Joachim; Kluyskens, Virginie; Dehez, Bruno. Stability and Performance Analysis of Electrodynamic Thrust Bearings. In: Actuators, Vol. 8, no. 1, p. 11 (2019). doi:10.3390/act8010011.

10. Dehem, Stéphanie; Montedoro, vincezana; Brouwers, Isaline; Edwards, Martin; Detrembleur, Christine; Stoquart, gaetan; Renders, Anne; Heins, Sophie; Dehez, Bruno; Lejeune, Thierry. Validation of a robot serious game assessment protocol for upper limb motor impairment in children with cerebral palsy. In: NeuroRehabilitation, Vol. 45, no. 2, p. 137-149 (2019). doi:10.3233/nre-192745.


1. Dehez, Bruno; Van Verdeghem, Joachim. Electric machine with an electromagnetic bearing.

2. Baudart, François; Dehez, Bruno; Van Rossum, Cedric. Optimized development of electro-mechanical devices électrique.

3. Dehez, Bruno; Baudart, François. Array of conductors for a winding for an electrical machine.

4. Dehez, Bruno; Heremans, François; Ronsse, Renaud. Prosthesis or Orthosis.

5. Dehez, Bruno; Kluyskens, Virginie; van Beneden, Maxence. Improved permanent magnet bearing.

6. Dehez, Bruno; Dumont de Chassart, Corentin; Van Verdeghem, Joachim; Kluyskens, Virginie. Electric machine having an axial electrodynamic bearing.

7. Sapin, Julien; Dehez, Bruno; Gilliaux, Maxime. Rehabilitation system and method.

8. Dehez, Bruno; Kluyskens, Virginie; Baudart, François; Dumont de Chassart, Corentin. Electric machine having a radial electrodynamic bearing.

9. Baudart, François; Dehez, Bruno. Winding for a rotating electrical machine and method for designing such a winding.

10. Sapin, Julien; Dehez, Bruno. Upper limbs rehabilitating, monitoring and/or evaluating interactive device.

Conference Papers

1. De Gréef, Christophe; Kluyskens, Virginie; Dehez, Bruno. Impact of Flux Barrier Shape and Design Strategy in Synchronous Reluctance Machine Optimisation. 2022 xxx.

2. Van Verdeghem, Joachim; Robert, Adrien; Herrman, Simon; Dehez, Bruno. Impact of Ferromagnetic Yokes on Axial Flux Passively Levitated Self-Bearing Machines. In: 2022 25th International Conference on Electrical Machines and Systems (ICEMS). Vol. 1, no.1, p. 1-6 (2022). IEEE, 2022 xxx. doi:10.1109/icems56177.2022.9982947.

3. Beauloye, Louis; Dehez, Bruno. Impact of the Magnet Span on the Forces of Electrodynamic Suspensions with an Alternate Permanent Magnet Arrangement. In: 2022 25th International Conference on Electrical Machines and Systems (ICEMS), 2022, 978-1-6654-9302-4 xxx. doi:10.1109/icems56177.2022.9983125.

4. Beauloye, Louis; Dehez, Bruno. Pole Pitch Optimization of Permanent Magnet Electrodynamic Suspensions in High-Speed Transportation Systems. In: 2022 IEEE Vehicle Power and Propulsion Conference (VPPC), 2022, 978-1-6654-7587-7 xxx. doi:10.1109/vppc55846.2022.10003309.

5. François, Guillaume; Dehez, Bruno. Impact of slit configurations on eddy current and Joule losses in PCB windings of PM machines. 2021 xxx.

6. De Gréef, Christophe; Kluyskens, Virginie; Henrotte, François; Versele, Christophe; Geuzaine, Christophe; Dehez, Bruno. Time-Efficient Multi-Physics Optimization Approaches for the Design of Synchronous Reluctance Motors. 2021 xxx. doi:10.1109/ECCE47101.2021.9595977.

7. Colinet, Guillaume; Dehez, Bruno. Investigations on a new slotless homopolar hybrid active magnetic bearing. 2021 xxx.

8. Colinet, Guillaume; Dehez, Bruno. Influence of end winding configuration on the performance of slotless homopolar hybrid active magnetic bearings. 2021 xxx.

9. Van Verdeghem, Joachim; Dehez, Bruno. Performance Comparison of Wire-Wound and PCB Windings for Passively Levitated Self-Bearing Machines. 2021 xxx. doi:10.23919/ICEMS52562.2021.9634303.

10. Van Verdeghem, Joachim; Severson, Eric; Dehez, Bruno. Hybrid Active-Passive Operation of a Passively Levitated Self-Bearing Machine. 2021 xxx.

Book Chapters

1. Denies, Jonathan; Dehez, Bruno; Glineur, François; Ben Ahmed, Hamid. Impact of the material distribution formalism on the efficiency of evolutionary methods for topology optimization. In: Recent Advances in Optimization and its Applications in Engineering , Springer: Heidelberg, 2010, p. 489-498. 978-3-642-12597-3. xxx xxx. doi:10.1007/978-3-642-12598-0_40.

2. Dehez, Bruno; Froidmont, Vincent; Grenier, Damien; Raucent, Benoît. Design and Modelling of a Two Degrees of Freedom Spherical Actuator with Unlimited Angular Range. In: Recent Advances in Mechatronics , xxx, 1999, 522-535. 978-981-4021-34-0. xxx xxx.


1. Dehez, Bruno; Grenier, Damien; Labrique, Francis; Matagne, Ernest. Électromécanique Principes physiques Principaux convertisseurs Principales applications. Presses universitaires de Louvain, 2018. 978-2-87558-635-3. 372 pages.


1. Dehez, Bruno. Elaboration et application d'une approche multidisciplinaire pour la conception d'un actionneur électrique à rotor sphérique, prom. : Raucent, Benoît ; Grenier, Damien, 2004-06-30.