CV: Post doctoral fellow - Power electronics



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 Date Submitted:23-03-2015
 Last Modified:23-03-2015 (04:24)
Job information
 Current job:Post doctoral fellow - Power electronics
 Employment Term:Temp/Contract
 Job location:Anywhere
 Date available:within 3months
 KeywordsPower electronics, SMPS, wide band gap devices, power managment, converter design,


                2011-2014        Ph.D in power electronic: G2Elab/Thales, Grenoble, France

Thesis title: High frequency DC-DC converter using GaN devices.


                2007-2010        ENGINEERING SCHOOL: ENSE3, GRENOBLE, FRANCE

Electrical engineering degree with a specialization in power electronic.



                2014-2015        Postdoctoral fellow, G2Elab, France

·      Design of 600V switching mode power supply (SMPS) using GaN devices, for motor control.

·      Computation of stray parasitic elements to improve dynamic performances.

·      Study of different gate driver topologies to work at high temperature.

·      EMC optimization

·      PCB design

·      Tests and measures

·      Team leader in the Little Box Challenge (LBC).  High power density, single phase 2kVA inverter.

·      Optimization of every aspect of the inverter: Control, gate driver, layout, EMC, filters, power topology, packaging, thermal aspects…

·      Multi-level topology

·      Active filter

·      GaN FET


                2011-2014        Ph.D student, G2Elab/Thales, France

·      Realization of a 100W 1.4MHz insulated DC/DC converter achieving 92% efficiency.

·      Analysis of insulated DC/DC converter topology like DAB.

·      Use of MOSFETs and wide band gap devices for high frequencies (GaN devices).

·      PCB design using Altium. Reduction of parasitic elements to prevent EMC issues. SMD and through hole devices on PCB or IMS substrate.

·      Hardware construction. Electronic hardware design.

·      Parasitic elements computation using InCa3D.  Design of inductances using PCB tracks.

·      Design of different insulated gate driver topologies. Realization of an IC to improve commutation of wide band gap devices.

·      Simulation of power electronic circuits (SMPS) using SPICE-like tools.

·      Loss computation in switches and magnetic elements using Mathcad.

·      Design of magnetic components.

·      Analogue and digital controllers.

·      Measures, test and debug of switch mode power supply.


2010                    research internship, CEA-INES, Bourget du lac, France (6months)

·         Study of the impact of soiling on photovoltaic panel efficiency.

·         Spectral responsivity analysis.

·         Spectrometry.


2009                    Internship, Expert solaire, Poisat, France (3months)

·         Design of solar PV array systems on roofs using PVsyst.

·         Evaluation of shadings.

·         3D modelling of the building and its PV system.



insulated gate driver for eGaN fets

Delaine, Johan ; Jeannin, Pierre-Olivier ; Frey, David ; Guepratte, Kevin

Energy Conversion Congress and Exposition (ECCE), 2014


Improvement of GaN transistors working conditions to increase efficiency Of A 100W DC-DC converter

Delaine, Johan ; Jeannin, Pierre-Olivier ; Frey, David ; Guepratte, Kevin

Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Seventh Annual IEEE


High frequency DC-DC converter using GaN device

Delaine, Johan ; Jeannin, Pierre-Olivier ; Frey, David ; Guepratte, Kevin

Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE



French: native language.

English: Fluent.



Traveling, hand ball (captain and coach), riding motorcycle, growing bonsai and playing guitar and drums.

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