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Julien Fontchastagner

Associate Professor in Electrical Engineering

Research Lab.:

GREEN (Groupe de Recherche en Energie Electrique de Nancy)

 

Topics:

  • Analytical and numerical modeling of electromagnetic devices
  • Related global optimization
  • Electro-magneto-mechanical energy conversion

 

Teaching activities:

Electrical engineering department - ENSEM school of engineering

 

Topics:

  • Electromagnetism (low frequency)
  • Electrical engineering
  • Applied mathematics
  • Numerical analysis

 

 

 

Journal articles21 documents

  • Dominique Giraud, Baptiste Ristagno, Denis Netter, Julien Fontchastagner, Nicolas Labbe, et al.. Simple Method to Reduce Computation Time in Planar Air-Gap 3-D FEM Non-Linear Problems. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2020, 56 (2), pp.7505304. ⟨10.1109/TMAG.2019.2947182⟩. ⟨hal-02886364⟩
  • Dominique Giraud, Baptiste Ristagno, Denis Netter, Julien Fontchastagner, Nicolas Labbe, et al.. Axial claw pole motor: harmonic torque estimation using finite element method. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Emerald, 2020, 39 (5), pp.1157-1167. ⟨10.1108/COMPEL-01-2020-0024⟩. ⟨hal-02930788⟩
  • Baptiste Ristagno, Dominique Giraud, Julien Fontchastagner, Denis Netter, Noureddine Takorabet, et al.. FEM using projection of physical properties suitable for movement modeling and optimization processes. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Emerald, 2020, 39 (5), pp.1185-1199. ⟨10.1108/COMPEL-01-2020-0022⟩. ⟨hal-03021862⟩
  • Julien Fontchastagner, Thierry Lubin, Denis Netter. Axial-field eddy-current coupling : a 3D test problem for numerical experiments. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Wiley, 2018, 31 (2), pp.e2217. ⟨10.1002/jnm.2217⟩. ⟨hal-01444185⟩
  • Sara Bazhar, Baptiste Ristagno, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. New Topology of Direct Current Claw-Pole machines for Stop-Start application. COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Emerald, 2018, 37 (5), pp.1635 - 1644. ⟨10.1108/COMPEL-12-2017-0542⟩. ⟨hal-01914910⟩
  • Julien Fontchastagner, Thierry Lubin, Smail Mezani, Noureddine Takorabet. Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model. Open Physics, De Gruyter, 2018, 16 (1), pp.21 - 26. ⟨10.1515/phys-2018-0004⟩. ⟨hal-01728164⟩
  • Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet. Three dimensional pole shape optimization of claw pole machines based on a hybrid model. International Journal of Applied Electromagnetics and Mechanics, IOS Press 2018, 57 (S1), pp.73-81. ⟨10.3233/JAE-182318⟩. ⟨hal-01740985⟩
  • Sara Bazhar, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe, Raphael Andreux. Optimization of DC Starters Based on Reluctance Network Accounting for Armature Reaction Magnetic Field. Electric Power Components and Systems, Taylor & Francis, 2017, 45 (16), pp.1822-1831. ⟨10.1080/15325008.2017.1402394⟩. ⟨hal-02000828⟩
  • Sara Bazhar, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. Hybrid Analytical Model Coupling Laplace’s Equation and Reluctance Network for Electrical Machines. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2017, 53 (6), pp.8102304. ⟨10.1109/TMAG.2017.2654966⟩. ⟨hal-01631132⟩
  • Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet. Hybrid Model: Permeance Network and 3-D Finite Element for Modeling Claw-Pole Synchronous Machines. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2017, 53 (6), pp.7206704. ⟨10.1109/TMAG.2017.2657890⟩. ⟨hal-01631082⟩
  • Julien Fontchastagner, Thierry Lubin, Frédéric Messine, Smaïl Mezani. Efficient Design Using Successive Analytical Subproblems Method: Application to Axial Magnetic Couplings. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2015, 51 (3), 4 p. ⟨10.1109/TMAG.2014.2357055⟩. ⟨hal-01064154⟩
  • Hugues Renaudineau, Fabrizio Donatantonio, J. Fontchastagner, Giovanni Petrone, Giovanni Spagnuolo, et al.. A PSO-Based Global MPPT Technique for Distributed PV Power Generation. IEEE Transactions on Industrial Electronics, Institute of Electrical and Electronics Engineers, 2015, 62 (2), pp.1047 - 1058. ⟨10.1109/TIE.2014.2336600⟩. ⟨hal-01383695⟩
  • Blaise Lapôtre, Noureddine Takorabet, Farid Meibody-Tabar, J. Fontchastagner, Ramdane Lateb, et al.. New Model of Radial Force Determination in Bearingless Motor. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2015, 51 (3), pp.8202104. ⟨10.1109/TMAG.2014.2354536⟩. ⟨hal-01383782⟩
  • Raphael Andreux, J. Fontchastagner, Noureddine Takorabet, Nicolas Labbe. A Fast Finite Element Model Taking Into Account 3-D Effects for the Optimal Design of Micro-Hybrid Starters. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2014, 50 (5), pp.7400408. ⟨10.1109/TMAG.2013.2292034⟩. ⟨hal-01383622⟩
  • Raphael Andreux, J. Fontchastagner, Noureddine Takorabet, Nicolas Labbe, Jean-Sebastien Metral. A general approach for brushed dc machines simulation using a dedicated field/circuit coupled method. Progress In Electromagnetics Research, EMW Publishing, 2014, 145 (5), pp.213 - 227. ⟨10.2528/PIER14011402⟩. ⟨hal-01383620⟩
  • Dinh An Nguyen, Wattana Kaewmanee, Melika Hinaje, Julien Fontchastagner, Denis Netter, et al.. Comparison Between Voltage and Current Boundary Conditions in PEMFC Model. ECS Transactions, Electrochemical Society, Inc., 2010, 26 (1), pp. 143-153. ⟨10.1149/1.3428985⟩. ⟨hal-01522936⟩
  • Julien Fontchastagner, yvan Lefèvre, Frédéric Messine. Some Co-Axial Magnetic Couplings Designed Using an Analytical Model and an Exact Global Optimization Code. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2009, 45 (3), pp.1458-1461. ⟨10.1109/TMAG.2009.2012678⟩. ⟨hal-01522924⟩
  • Julien Fontchastagner, Frédéric Messine, yvan Lefèvre. Design of Electrical Rotating Machines by Associating Deterministic Global Optimization Algorithm With Combinatorial Analytical and Numerical Models. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2007, 43 (8), pp.3411-3419. ⟨10.1109/TMAG.2007.898907⟩. ⟨hal-01522926⟩
  • yvan Lefèvre, Julien Fontchastagner, Frédéric Messine. Building a CAD system for educational purpose based only on a mesh tool and a finite elements solver. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2006, 42 (4), pp.1483-1486. ⟨10.1109/TMAG.2006.871435⟩. ⟨hal-01522928⟩
  • Julien Fontchastagner, Olivier Chadebec, H. Schellekens, Gérard Meunier, V. Mazauric. Coupling of an Electrical Arc Model with FEM for Vacuum Interrupter Designs. IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2005, 41, pp.1600 à 1603. ⟨10.1109/TMAG.2005.845023⟩. ⟨hal-00181808⟩
  • Julien Fontchastagner, Olivier Chadebec, Hans Schellekens, Gérard Meunier. Couplage d'un modèle d'arc électrique avec la méthode des éléments finis pour le dimensionnement des cellules de coupure à technologie vide. Revue Internationale de Génie Electrique – RIGE, 2005, 8 (1), pp.139 à 151. ⟨hal-03047858⟩

Patents9 documents

  • Nicolas Labbe, Gaëtan Didier, Denis Netter, Julien Fontchastagner, Noureddine Takorabet, et al.. Dispositif de transmission de puissance sans contact par couplage inductif à résonance pour recharger un véhicule automobile. France, N° de brevet: FR3099312. 2021. ⟨hal-03267690⟩
  • Nicolas Labbe, Khadija El Baraka, Svetislav Jugovic, Geoffrey Devornique, Baptiste Ristagno, et al.. Machine électrique synchrone polyphasée à commutateur mécanique. France, N° de brevet: FR3098044. 2021. ⟨hal-03395847⟩
  • Nicolas Labbe, Gaëtan Didier, Denis Netter, Noureddine Takorabet, Julien Fontchastagner, et al.. Dispositif de transmission de puissance sans contact par couplage inductif à résonance pour recharger un véhicule automobile. France, N° de brevet: FR3099311. 2021. ⟨hal-03267682⟩
  • Nicolas Labbe, Maximilien Gentil, Loic Vapillon, Gautier Trémouille, Geoffrey Devornique, et al.. Moteur électrique, pour démarreur, comprenant un rotor à épingles et un collecteur. France, N° de brevet: FR3090236. 2020. ⟨hal-02987116⟩
  • Nicolas Labbe, Geoffrey Devornique, Khadija El Baraka, Svetislav Jugovic, Baptiste Ristagno, et al.. Machine électrique synchrone polyphasée à commutateur mécanique. France, N° de brevet: FR3092712. 2020. ⟨hal-02930885⟩
  • Nicolas Labbe, Gaëtan Didier, Denis Netter, Julien Fontchastagner, Noureddine Takorabet, et al.. Device for Transmitting Power Contactlessly Through Resonant Inductive Coupling for Recharging a Motor Vehicle. France, Patent n° : WO2020187747. 2020. ⟨hal-02950967⟩
  • Nicolas Labbe, Geoffrey Devornique, Khadija El Baraka, Svetislav Jugovic, Julien Fontchastagner, et al.. Mechanical-Commutator Polyphase Synchronous Electric Machine. France, Patent n° : WO2020165252. 2020. ⟨hal-02930879⟩
  • Nicolas Labbe, Éric Vernay, Marius Drozdek, Jean-Sebastien Metral, Julien Fontchastagner, et al.. Démarreur de véhicule automobile muni d'un stator à performances magnétiques améliorées. France, N° de brevet: FR3051989 - EP3249793. 2017. ⟨hal-02930896⟩
  • Nicolas Labbe, Raphaël Andreux, Noureddine Takorabet, Julien Fontchastagner. Démarreur de véhicule automobile. France, N° de brevet: EP3017526 - WO2015001268. 2016. ⟨hal-02930933⟩

Theses1 document

  • Julien Fontchastagner. Résolution du problème inverse de conception d'actionneurs électromagnétiques par association de méthodes déterministes d'optimisation globale avec des modèles analytiques et numériques. Energie électrique. Institut National Polytechnique De Toulouse, 2007. Français. ⟨tel-02945546⟩

Conference papers45 documents

  • Baptiste Ristagno, Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet, et al.. Level-set based method to model high-performance commutator. 23rd International Conference on the Computation of Electromagnetic Fields, Compumag 2021, Jan 2022, Cancun, Mexico. pp.PD-P1: 13 (ID 408). ⟨hal-03551004⟩
  • Julien Fontchastagner, Frédéric Messine. A Deterministic Global Optimization Code with a 3D FEM Black-Box Constraint. 23rd International Conference on the Computation of Electromagnetic Fields, Compumag 2021, Jan 2022, Cancun, Mexico. pp.PC-P1: 8 (ID 413). ⟨hal-03551014⟩
  • Baptiste Ristagno, Geoffrey Devornique, Dominique Giraud, Julien Fontchastagner, Denis Netter, et al.. New commutator system for novel brushed synchronous machines. EMF'2021 - The 12th International Symposium on Electric and Magnetic Fields, Jul 2021, Online, France. ⟨hal-03550809⟩
  • Dominique Giraud, Baptiste Ristagno, Denis Netter, Julien Fontchastagner, Nicolas Labbe. Design Of An Axial Claw Pole Motor Using A Scalar Magnetic Potential Formulation Fine Tuned Thanks To A Vector Potential One. CEFC 2020, The Nineteenth Biennial IEEE Conference on Electromagnetic Field Computation, Nov 2020, Pisa, Italy. ⟨hal-03038416⟩
  • Dominique Giraud, Baptiste Ristagno, Denis Netter, Julien Fontchastagner, Noureddine Takorabet, et al.. Axial claw pole motor: harmonic torque estimation. 19th International Symposium on Electromagnetic fields in Mechatronics, Electrical and Electronic Engineering, ISEF2019, Aug 2019, Nancy, France. ⟨hal-02943716⟩
  • Dominique Giraud, Baptiste Ristagno, Julien Fontchastagner, Nicolas Labbe, Denis Netter, et al.. Simple method to reduce computation time in planar airgap 3D FEM non-linear problems. 22nd International Conference on the Computation of Electromagnetic Fields, COMPUMAG 2019, Jun 2019, Paris, France. ⟨hal-02943724⟩
  • Noureddine Takorabet, Julien Fontchastagner, Denis Netter. On the hybridization of 3D Finite Element Models and Reluctance Networks for Shape Optimization of Magnetic Devices. Electrical Engineering International Conference EEIC2019, Dec 2019, Béjaia, Algeria. ⟨hal-02943711⟩
  • Baptiste Ristagno, Dominique Giraud, Julien Fontchastagner, Denis Netter, Noureddine Takorabet, et al.. FEM using projection of physical properties suitable for movement modeling and optimization processes. 19th International Symposium on Electromagnetic fields in Mechatronics, Electrical and Electronic Engineering, ISEF2019, Aug 2019, Nancy, France. ⟨hal-02943713⟩
  • Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet. Dimensionnement optimal de griffes d'alterno- démarreurs grâce à un modèle hybride couplant fortement EF 3D et schéma de perméances. Symposium de Génie Électrique - SGE'2018, Jul 2018, Nancy, France. ⟨hal-02945390⟩
  • Baptiste Ristagno, Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet, et al.. Modeling method for saving meshing time : projection of physical properties using mathematical functions. 18th Biennial Conference on Electromagnetic Field Computation, CEFC2018, Oct 2018, Hangzhou, China. ⟨hal-03021758⟩
  • Baptiste Ristagno, Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet, et al.. DC commutator modeling in dynamic FEM problem : an innovative coupling method thanks to mathematical functions. 18th Biennial Conference on Electromagnetic Field Computation, CEFC2018, Oct 2018, Hangzhou, China. ⟨hal-03021783⟩
  • Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet. Dimensionnement optimal de griffes d'alterno-démarreurs grâce à un modèle hybride couplant fortement EF 3D et schéma de perméances. Symposium de Génie Electrique, Université de Lorraine [UL], Jul 2018, Nancy, France. ⟨hal-02981844⟩
  • Sara Bazhar, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. Une approche pour l'hybridation des réseaux de réluctances et de l'équation de Laplace pour la modélisation des dispositifs magnétiques en trois dimensions. Symposium de Génie Electrique, Université de Lorraine [UL], Jul 2018, Nancy, France. ⟨hal-02981918⟩
  • Julien Fontchastagner, Geoffrey Devornique, Sara Bazhar, Baptiste Ristagno, Denis Netter, et al.. Dilated subregions for solving FEM problems with thin air-gaps: First step, 2D magnetostatic cases. 18th International Symposium on Applied Electromagnetics and Mechanics, ISEM 2017, Sep 2017, Chamonix - Mont-Blanc, France. ⟨hal-02943727⟩
  • Sara Bazhar, Baptiste Ristagno, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. New Topology of Direct Current Claw Pole machines for Stop-Start application. 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering - ISEF 2017, Sep 2017, Lodz, Poland. ⟨hal-02943731⟩
  • Julien Fontchastagner, Thierry Lubin, Smail Mezani, Denis Netter, Noureddine Takorabet. Optimal Design of an Axial-Flux Eddy-Current Magnetic Coupling. 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering - ISEF 2017, 2017, Lodz, Poland. ⟨hal-01910615⟩
  • Geoffrey Devornique, Julien Fontchastagner, Denis Netter, Noureddine Takorabet. Three dimensional Pole Shape Optimization of Claw Pole Machines based on Hybrid model. 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering - ISEF 2017, Sep 2017, Lodz, Poland. ⟨hal-02944091⟩
  • Geoffrey Devornique, Julien Fontchastagner, Noureddine Takorabet, Denis Netter. Fast Computation of Nonlinear 3D FE Analysis for Electrical Machines. 10th International Symposium on Electric and Magnetic Fields - EMF 2016, Apr 2016, Lyon, France. ⟨hal-02944129⟩
  • Sara Bazhar, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. Hybrid Analytical Model Coupling Laplace’s Equation and Reluctance Network for Electrical Machines. 17th IEEE Biennial Conference on Electromagnetic Field Computation (IEEE CEFC), Nov 2016, Miami, FL, United States. ⟨hal-02944118⟩
  • Julien Fontchastagner, Thierry Lubin, Denis Netter. Axial-Field Eddy-Current Couplings: a 3D Test Problem for Numerical Experiments. International Symposium on Electric and Magnetic Fields (EMF 2016), Apr 2016, Lyon, France. ⟨hal-01305748⟩
  • Geoffrey Devornique, Julien Fontchastagner, Noureddine Takorabet. Hybrid model: Permeance network + 3D finite element for modeling claw-pole synchronous machines. 17th IEEE Biennial Conference on Electromagnetic Field Computation (IEEE CEFC), Nov 2016, Miami, FL, United States. ⟨10.1109/CEFC.2016.7816253⟩. ⟨hal-01873828⟩
  • Thierry Lubin, Julien Fontchastagner, Smail Mezani, Abderrezak Rezzoug. Comparison of Transient Performances for Synchronous and Eddy-current Torque Couplers. 22nd International Conference on Electrical Machines (ICEM), Sep 2016, Lausanne, Switzerland. pp.695-701. ⟨hal-01444195⟩
  • Sara Bazhar, Julien Fontchastagner, Noureddine Takorabet, N. Labbe, R. Andreux. Torque modeling and optimization of DC machine based on reluctance network taking into account armature magnetic reaction field. 18th International Conference on Electrical Machines and Systems (ICEMS), Oct 2015, Pattaya, Thailand. pp.1580-1586., ⟨10.1109/ICEMS.2015.7385293⟩. ⟨hal-01389235⟩
  • Sara Bazhar, Julien Fontchastagner, Noureddine Takorabet, L. Labbe, Raphael Andreux. Magnetic model of DC machine taking into account armature reaction magnetic field based on reluctance network theory. ISEF 2015, 17th International Symposium on Electromagnetic Fields, Sep 2015, Valence Spain. ⟨hal-01387174⟩
  • Blaise Lapôtre, Noureddine Takorabet, Farid Meibody-Tabar, Julien Fontchastagner, Ramdane Lateb, et al.. New model of radial force determination in bearingless motor. 16th Biennial IEEE Conference on Electromagnetic Field Computation - CEFC 2014, May 2014, Annecy, France. ⟨hal-02944168⟩
  • Blaise Lapôtre, Noureddine Takorabet, Farid Meibody-Tabar, Julien Fontchastagner, Ramdane Lateb, et al.. Radial force modeling of bearingless motors based on spectral analysis of field sources. ISMB 2014, 14th International Symposium on Magnetic Bearings, Aug 2014, Linz, Austria. ⟨hal-01386438⟩
  • Julien Fontchastagner, Thierry Lubin, Frédéric Messine, Smail Mezani. Efficient Design Using Successive Analytical Subproblems Method: Application to Axial Magnetic Couplings. 16th Biennial IEEE Conference on Electromagnetic Field Computation - CEFC 2014, May 2014, Annecy, France. ⟨hal-02944155⟩
  • Raphaël Andreux, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. Modèle 2.5D pour l’optimisation des démarreurs renforcés stop-start. Journées de la section Électrotechnique du club EEA: Réseaux Autonomes du Futur, Apr 2013, Nancy, France. ⟨hal-01384703⟩
  • Raphael Andreux, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe. A three dimensional electromagnetic effect using 2D field computations. 15th Biennial IEEE Conference on Electromagnetic Field Computation - CEFC 2012, Nov 2012, Oïta, Japan. ⟨hal-02944309⟩
  • Tingting Ding, Noureddine Takorabet, Julien Fontchastagner, Denis Netter. Study of thermal effect of the line start permanent magnet motors. 15th Biennial IEEE Conference on Electromagnetic Field Computation - CEFC 2012, Nov 2012, Oïta, Japan. ⟨hal-02944304⟩
  • Raphaël Andreux, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe, Jean-Sebastien Metral. Magnetic-field electric circuit coupled method for brush DC motor simulations. XXth International Conference on Electrical Machines - ICEM'2012, Sep 2012, Marseille, France. ⟨hal-02944318⟩
  • Raphaël Andreux, Julien Fontchastagner, Noureddine Takorabet, Nicolas Labbe, Aurélien Vauquelin. Modélisation circuit d’une machine série à collecteur mécanique. Électrotechnique du Futur - EF'2011, Dec 2011, Belfort, France. ⟨hal-02945426⟩
  • Julien Fontchastagner, Frédéric Messine. Interval Branch and Bound Algorithms dealing with Black-Box Constraints. TOULOUSE GLOBAL OPTIMIZATION WORKSHOP - TOGO 2010, Aug 2010, Toulouse, France. ⟨hal-02944330⟩
  • Julien Fontchastagner, Frédéric Messine, yvan Lefèvre. An Exact Optimization Code Combined with a Hybrid Model for Magnetic Couplings Design. 17th International Conference on the Computation of Electromagnetic Fields (COMPUMAG 2009), Nov 2009, Florianopolis, Brazil. pp.257-258. ⟨hal-02945658⟩
  • Frédéric Messine, Julien Fontchastagner, yvan Lefèvre. An Exact Interval Branch and Bound Algorithms to Solve Problems with Some Black-box Constraints. 20th International Symposium of Mathematical Programming - ISMP 2009, Sep 2009, Chicago, United States. ⟨hal-02945636⟩
  • Loig Allain, Marc Budinger, Jonathan Liscouet, yvan Lefèvre, Julien Fontchastagner, et al.. Preliminary Design of Electromechanical Actuators with Modelica. Modelica 2009, 7th Modelica Conference, Como, Italy, Sep. 20-22, 2009, Sep 2009, Como, Italy. ⟨10.3384/ecp09430099⟩. ⟨hal-02194563⟩
  • Julien Fontchastagner, Frédéric Messine, yvan Lefèvre. Interval Branch and Bound Algorithms for Inverse Problems of Electromagnetic Devices Design. 23rd European Conference on Operational Research - EURO Conference Bonn 2009, Jul 2009, Bonn, Germany. ⟨hal-02945609⟩
  • Julien Fontchastagner, Frédéric Messine, yvan Lefèvre. Some Co-axial Magnetic Torque Coupling Designed Using an Analytical Model and an Exact Global Optimization Code. 13th Biennial IEEE Conference on Electromagnetic Field Computation - CEFC 2008, 2008, Athènes, Greece. ⟨hal-02945885⟩
  • Julien Fontchastagner, Frédéric Messine, yvan Lefèvre. An Interval Branch and Bound Algorithm for Mixed Constrained Global Optimization Problems with Some Constraints of Black-Box type. The international conference on NonConvex Programming : Local and Global approaches. Theory, Algorithms and Applications - NCP'07, Dec 2007, Rouen, France. ⟨hal-02945787⟩
  • yvan Lefèvre, Frédéric Messine, Julien Fontchastagner, Xan T. A. Bui. ASSOCIATION DE DIFFERENTES METHODES OPTIMISATION ET DE MODELES DE CALCUL DU CHAMP MAGNETIQUE. Électrotechnique du Futur - EF’2007, 2007, Toulouse, France. ⟨hal-02945823⟩
  • Julien Fontchastagner, Frédéric Messine, yvan Lefèvre. A New Rational Way Combining Analytical and Numerical Models with a Deterministic Global Optimization Algorithm for the Design of Electrical Rotating Machines. XVII International Conference on Electrical Machines - ICEM 2006, Sep 2006, Chania, Crete Island, Greece. ⟨hal-02945805⟩
  • Julien Fontchastagner. Validation numérique de solutions du problème inverse de conception d’actionneurs électriques. Conférence des Jeunes Chercheurs en Génie Electrique - JCGE'05, Jun 2005, Montpellier, France. ⟨hal-02945849⟩
  • yvan Lefèvre, Julien Fontchastagner, Frédéric Messine. Building a CAD system for educational purpose based only on a mesh tool and a FE solver. 15th Conference on the Computation of Electromagnetic Fields - COMPUMAG 2005, Nov 2005, Shenyang, China. ⟨hal-02945813⟩
  • Julien Fontchastagner, Olivier Chadebec, Hans Schellekens, Gérard Meunier. Model of a rotating vacuum arc by the coupling of a simple arc model with a commercial 3D FEM. XXIst International Symposium on Discharges and Electrical Insulation in Vacuum - ISDEIV 2004, Sep 2004, Yalta, Ukraine. pp.276-279, ⟨10.1109/DEIV.2004.1418659⟩. ⟨hal-02946908⟩
  • Julien Fontchastagner, Olivier Chadebec, Hans Schellekens, Gérard Meunier. Couplage d'un modèle d'arc électrique avec la méthode des éléments finis pour le dimensionnement des cellules de coupure à technologie vide. 4ème Conférence Européenne sur les Méthodes Numériques en électromagnétisme - NUMELEC'03, 2003, Toulouse, France. ⟨hal-02945841⟩