Research at EPF



Established in 2012, the axis Energy focuses on scientific issues in the field of :

  • Energy production;
  • Energy efficiency in buildings

The Assistant Professors of axis 3 carries out their research at l’Institut d’Electronique et des Systèmes (IES) at the l’University Montpellier 2 and to the laboratory CREIDD at UTT (Troyes).

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1/Energy production

Concentrated Photovoltaic (CPV)

  • Durability of solar cells under high concentrations and dissipation of thermal effects;
  • Characterization of new generation CPV cells (thermal conductivity measurements);


Energy Production

  • Development of micro-sources of energy (natural and / or artificial photons, mechanical energy of human movement or of natural and / or industrial vibration) to supply sensors and communicating objects;
  • Modeling storage solution and energy recovery of the energy dissipated in electronic systems;
  • Development of cooling solutions: passive solutions (Phase Change Materials) and solar refresh (Stirling, absorption machine).


Développement et optimisation des systèmes de rafraîchissement


2/ Energy efficiency in buildings

Materials and modeling

  • Characterization of the properties of materials used in green building;
  • Multiscale dynamic modeling - from the wall to the building - of the building behavior.

Efficacité énergétique dans les bâtiments

Efficiency and Comfort

  • Design and production of low-cost sensors to measure energy efficiency and to study thermal comfort;
  • Image analysis for anomaly detection (heat...) in the habitat through probabilistic approaches;
  • Study of thermal comfort for the assessment of human feeling, integrated with an energy audit tool building.



Youcef Bouzidi Youcef BOUZIDI: Assistant professor University of technology of Troyes (UTT) since 2001 in the Department of physic, mechanic and nanotechnology. Researcher at UTT in the Centre of research and interdisciplinary studies on sustainable development (CREIDD), Joint Research Unit of CNRS.
Specialist of the linking between energy and sustainable industrial systems. Assistant Professor at EPF.
The research works of Youcef BOUZIDI are structured around the solutions adopted or encouraged by the industrial ecology, life cycle Analysis and eco-design in order to supply answers to industrial policy within the framework of a sustainable development.

Keywords: industrial ecology, life cycle Analysis, eco-design.

Nicolas CamaraNicolas CAMARA : Nicolas Camara got in 2001 a Physics degree from the National School of Engineering at Marseille (Ecole Centrale Marseille) and in 2006 a PhD in GPEI laboratories (INP-Grenoble) and FORTH (University of Crete) Micro-Nano Electronics. From 2007 to 2010, Nicolas Camara performed a postdoctoral stay at the Barcelona Microelectronics National Center on topics related to innovative semiconductor materials for power electronics (Silicon Carbide) and nanoelectronics (Graphene). After a year as ATER at the University of Montpellier (Laboratory Charles Coulomb), he obtained in 2011 a position as Lecturer at the University of Tours and conducted his research at the GREMAN laboratory in the field of recovery of energy via piezoelectric nanowires.

Since September 2016, Nicolas Camara has been performed its research at EPF Montpellier in collaboration with IES laboratory (University of Montpellier) for the implementation of micro energy sources, essential brick in the deployment of autonomous communicating sensors networks.

Keywords: Nanotechnology, Semi conductors, Microelectronics, Energy Recovery.

Antoine GademerAntoine GADEMER :  Antoine Gademer obtained in 2005 a degree from ESIEA Engineer. He then obtained a Master in Geographic Information Science (UMLV / ENSG) and a PhD in CGWG laboratories (University of Paris-Est) and ATIS (ESIEA) in the field of Geographic Information Science.
Antoine GADEMER performs its research at IES. His research activities are involved in the implementation of a complex sensor (heat, humidity…) designed by the IES Laboratory for mapping the EPF building of Troyes and a Montpellier building. This project will benefit from a carrier (rolling indoor, flying outdoors) able of ego-localization to automate and geotag the measurement.

Keywords: Algorithms and Programming, Digital Electronics, Remote Sensing, Micro Robotic Exploration (UGV, USV, UUV, UAV) Payload specialist, Image processing.

Nadia MartajNadia MARTAJ : Nadia Martaj obtained a Master of Science and Technology in Energy in 2000 at the Faculty of Sciences and Techniques Casablanca (Morocco). She then obtained in 2004 a Master in Mechanical Engineering and Thermal at the University of Paris Ouest (Nanterre-La Défense). She received a PhD in 2008 at the laboratory LEME laboratory (power engineering, mechanics and electromagnetism laboratory) in the specialty Energy / Process Engineering. Since 2012, she is a teacher and researcher at the EPF Montpellier.
Nadia MARTAJ currently conducts her research at EPF Troyes. Her research areas include simulation of thermal performance of buildings, photovoltaic cells, Stirling engines, energy optimizations and refrigeration machines.

Keywords: Simulation, Optimization, Stirling engine, Building Energy, Photovoltaic Cells, Renewable Energy.

Abdelatif MerabtineAbdelatif MERABTINE : Abdelatif Merabtine received in 2008 an engineering degree in Mechanical Engineering at the National Technical University (Algiers). He then obtained a Master degree in Energetics and Propulsion Aerospace at the University of Paris Ouest (Nanterre) and a PhD from the University of Lorraine (Nancy) in the field of energy the building.
Abdelatif Merabtine conducts its research within the Institute Charles Delaunay (CREIDD Laboratory) at the University of Technology of Troyes. His research activities concern the study of the energy behavior of the envelope and energy systems related to the building for energy optimization.

Keywords: heat transfer, heat the building systems approach, building energy efficiency.

Sandrine PinceminSandrine PINCEMIN : Sandrine Pincemin received in 2002 an Engineering degree in Mechanical Specialty Energetics at Polytechnic School of Marseille. She then obtained in 2007 a PhD in Process Engineering at PROMES laboratory (Perpignan) the field of composite materials with high energy performance for energy storage. She worked from 2007 to 2012 as an engineer at CSTB Studies & Research Division Renewable Energies in the field of energy storage (Thermal and Electric) for the buildings with low energy and positive energy.

Sandrine PINCEMIN currently conducts her research in the IES laboratory (UMR CNRS 5214) at the University of Montpellier 2. Her research interests concern the production of electricity by photovoltaic solar cell concentration, and the building Mediterranean (identifying the needs of the Mediterranean building, cold production in the Mediterranean region, and thermal / electrical modeling of the Mediterranean building and optimization).

Keywords: Simulation, optimization, solar cells concentration, Energetics Building, Renewable Energy

Christophe Rodiet Enseignant Chercheur EPFChristophe RODIET: In 2010, Christophe RODIET obtained a Master's Degree in Physics and Engineering in Energy Conversion at the University of Reunion in partnership with the Ecole Nationale Supérieurs d'Electricité et de Mechanique (ENSEM, University of Lorraine). Then in 2014, in parallel with an ATER at the Ecole Nationale Supérieure des Mines in Nancy (ENSMN, University of Lorraine), he obtained a Doctorate in Energy Mechanics from the University of Lorraine  with specialty in thermal transfer (thermal metrology by multi-spectral thermography and thermal characterization of anisotropic and / or multilayer materials). From 2014 to 2015 he completed a postdoctoral stay at the University Institute of Industrial Thermal Systems (IUSTI, Aix-Marseille University, CNRS, UMR 7343, Marseille) in partnership with the Laboratoire de Mécanique et d'Acoustique (LMA, Aix- Marseille University, CNRS, UPR 7051, Marseille). Then, from 2015 to 2016 he carried out some post-doctoral stuides at the Institute of Materials Jean Rouxel (IMN, University of Nantes, CNRS, UMR 6502, Nantes) in partnership with the Thermokinetics Laboratory of Nantes (LTN, University of Nantes, CNRS, UMR 6607, Nantes). Finally, he joined EPF Montpellier in September 2016.

Christophe RODIET is currently performing its research at Institut d’Electronique et des Systèmes (IES, University of Montpellier, CNRS, UMR 5214). His fields of research concern thermal characterization by inverse regularized methods of thin films (photovoltaic solar cells with "CPV" concentration, supergrids...), estimation of heat sources within the CPV, as well as optical measurement (thermography) of the temperature range of the CPVs in operation.

Keywords: Thermal transfer, Thermal metrology, Multi-Spectral Thermography, Thermal characterization (thin films, anisotropic and / or multilayer materials), Inverse methods and regularization, Thermal and thermomechanical sources estimation or Optimization, Concentrated solar cells.


The research activities in axis Energy  are carried out within the IES laboratory, in collaboration with the LEME laboratory at the University of Paris Ouest-Nanterre-La Défense, the LMT Laboratory of ENS Cachan and in the CREIDD laboratory at UTT.. 


In order to model and simulate thermal machines integrated in the building, axis Energy is using the following software:

  • MATLAB / Simulink / SimPowerSystems: modeling and simulation of complex dynamic systems;
  • LabVIEW: development of acquisition applications, measurement data and control analysis;
  • COMSOL Multiphysics: modeling and optimization of thermal systems (machines, buildings, etc.).
  • BBC + platform (in collaboration with UTT and URCA, GRESPI laboratory): the Energy axe is involved in the sensor equipment (temperature, brightness, hygrometry, CO2) of the new EPF building as a real scale building for the thermal studies of the building and the occupant's comfort, as well as the deployment of a prototype of a sustainable house (RT2020 norm) composed of hot and cold zones to test several atmospheres in hot and cold climates.

Plateforme BBC+ Troyes


1. Books

  1. N. Martaj, M. Mokhtari, “Apprendre et maîtriser LabVIEW par ses applications”, ISBN 978-3-642-45335-9, Ed. Springer, 2014.
  2. S. PINCEMIN, participation à l’ouvrage "Le stockage de l’énergie", livre coordonné par P. Odru, Dunod., 2e édition 2013.

2. International peer reviewed journals

  1. N. Martaj, P. Rochelle, "1D modelling of an alpha type Stirling engine", International Journal for Simulation and Multidisciplinary Design Optimization (IJSMDO), Volume 5, A07, 2014
  2. N. Martaj, L. Grosu, P. Rochelle, A. Mathieu, M. Feidt, “Simulation of a Stirling engine used for a micro solar power plant : 0-D modelling, comparison with 1-D modelling”, Environmental Engineering and Management Journal (EEMJ), accepté en septembre 2014.
  3. H. Park; M. Ruellan; N. Martaj; R. Bennacer; E. Monmasson,“Generic Thermal Model of Electrical Appliances In Thermal building: Application to the Case of a Refrigerator”, Energy and Buildings 62 p. 335–342, 2013.
  4. H. Park, N.Martaj, M.Ruellan, R. Bennacer and Eric Monmasson, “Thermal Modeling of a Building System and its Parameter Identification”, JEET, Journal of Electrical Engineering & Technology, Vol. 8, No. 6, ISSN:1975-0102, 2013.
  5. A. Merabtine, R. Benelmir, El Ganaoui M. "Pseudo-bond graph model for the analysis of the thermal behavior of buildings", Thermal Science, 17(3) 723-732, 2013. 
  6. A. Merabtine, R. Benelmir, "Modeling of the RHC system with Bond Graphs approach", International Journal of Thermal and Environmental Engineering,  5(2) 145-153, 2013.

3. International/national  peer reviewed conferences

  1. N. Martaj, P. Rochelle, "Modélisation 1D d’un moteur Stirling de type Alpha", colloque francophone en énergie, environnement, économie et thermodynamique, COFRET'14, CNAM Paris, 23-25 avril2014.
  2. E. Giudicelli, N. Martaj, R. Bennacer, Y. Cuminal, et P. Combette,"Caractérisation thermique des cellules photovoltaïques multi-jonctions par la méthode 3w", Congrès Français de thermique, SFT'14, Lyon, 3-6 juin 2014.
  3. S. Pincemin, E. Giudicelli, N. Martaj, A. Perona, Y. Cuminal, "Multi-junction PV cells based on antimonide materials for concentrated solar application : study of the thermal behavior", Proceeding of CPV 10 international conference, Albuquerque, 2014.
  4. E. Giudilli, N. Martaj, A. Perona, S. Pincemin and Y. Cuminal, “Study of the thermal behavior of solar cells based on GaAs», International COMSOL Conference, Rotterdam, 2013.
  5. H. Park, N.Martaj, M.Ruellan, R. Bennacer and Eric Monmasson, “Thermal Modeling of a Building System and its Parameter Identification”, JEET, Journal of Electrical Engineering & Technology, Vol. 8, No. 6, ISSN:1975-0102, 2013.
  6. N. Martaj, L. Grosu, P. Rochelle, Modélisation 1D d'un moteur Stirling de type Alpha, poster SFT,2013.

4. Conferences - Seminars - Courses