Latest Space News
Fri, 05 Mar 2021 12:40:00 +0000
The longtime chief executive of Virgin Galactic, who moved into a new position at the company last year, has left the company but will continue to be an adviser to it. SpaceNews
Fri, 05 Mar 2021 01:53:25 +0000
A three-stage suborbital sounding rocket on March 3 launched an Air Force experiment from NASA’s Wallops Flight Facility in Virginia. SpaceNews
Fri, 05 Mar 2021 00:45:25 +0000
NASA has sharply increased the prices it charges commercial users of the International Space Station for cargo and other resources, a move that has left some companies confused and frustrated. SpaceNews
Thu, 04 Mar 2021 20:40:04 +0000
The Space Development Agency will solicit bids for an upcoming procurement of up to 150 satellites to be launched in late 2024. SpaceNews
Thu, 04 Mar 2021 19:08:43 +0000
Kencoa Aerospace Corp., a South Korean aircraft assembler and parts supplier that has NASA, SpaceX and Blue Origin as clients, is planning to expand its U.S. parts manufacturing plant in Georgia. SpaceNews
Thu, 04 Mar 2021 09:52:50 +0000
A SpaceX Falcon 9 launched a new set of Starlink satellites and landed the booster March 4, two and a half weeks after the landing failed on the previous launch. SpaceNews
Thu, 04 Mar 2021 00:34:10 +0000
SpaceX launched a prototype of its Starship next-generation vehicle March 3, landing it safely only to have the vehicle explode minutes later. SpaceNews
Wed, 03 Mar 2021 23:05:39 +0000
President Joe Biden issued a national security blueprint that lays out broad goals and priorities for his administration. SpaceNews
Wed, 03 Mar 2021 22:58:31 +0000
A NASA rover mission to look for ice at the south pole of the moon has passed a key review, but now costs significantly more than previously advertised. SpaceNews
Wed, 03 Mar 2021 21:56:01 +0000
Indonesia’s government has secured financing to continue manufacturing the SATRIA broadband satellite, although its intended orbital slot remains up in the air. SpaceNews
Wed, 03 Mar 2021 18:49:20 +0000
Some saw Jeff Bezos' announcement that he will will step down as chief executive of Amazon in July as a sign that Bezos would use that time and energy to provide new urgency for Blue Origin. SpaceNews
Wed, 03 Mar 2021 15:20:35 +0000
The White House unambiguous statement of support for the Space Force makes it “really clear that this is not a political issue, it’s an issue of national security,” said Gen. John Raymond. SpaceNews
Wed, 03 Mar 2021 13:26:24 +0000
China will work on development of two types of super-heavy launch vehicles for future lunar projects, a senior official said Wednesday. SpaceNews
Wed, 03 Mar 2021 12:32:41 +0000
As launch activity grows on the Eastern Range in Florida, companies and government agencies are looking at ways to add capacity, largely through incremental improvements. SpaceNews
Wed, 03 Mar 2021 11:00:14 +0000
Q-Ctrl, an Australian startup, is developing quantum sensors to send to Earth orbit, the moon and eventually Mars. SpaceNews
Tue, 02 Mar 2021 22:00:16 +0000
KVH Industries, the U.S. maritime satellite-connectivity specialist, expects clear sailing ahead after growing quarterly revenues despite shaky seas for cruise ships. SpaceNews
Tue, 02 Mar 2021 21:59:28 +0000
The National Geospatial Intelligence Agency is being challenged to provide faster and better products and services, the agency’s deputy director Stacey Dixon said. SpaceNews
Tue, 02 Mar 2021 17:38:57 +0000
Vega C is the next generation of the European small lift launcher developed by Avio under a programme of and funded by the European Space Agency and is now ready for the maiden flight. The rocket will also launch the Space Rider in the near future and a new smaller and versatile version is under […] SpaceNews
Tue, 02 Mar 2021 12:42:20 +0000
A growing realization of the need for a medium-class launch vehicle led Rocket Lab to speed up its plans to go public by merging with a special-purpose acquisition company (SPAC). SpaceNews
Tue, 02 Mar 2021 11:19:24 +0000
Chinese commercial launch company iSpace stated Monday that an errant piece of foam insulation caused the loss of its Hyperbola-1 rocket in February. SpaceNews
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  • CV: Post doctoral fellow - Power electronics

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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
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    Candidate Profile
     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
     Industry:
     KeywordsPower electronics, SMPS, wide band gap devices, power managment, converter design,
    CV

    EDUCATION

                    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.

     

    EXPERIENCES

                    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.

     

    PUBLICATIONS

    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

     

    LANGUAGES

    French: native language.

    English: Fluent.

     

    HOBBIES

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


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