Latest Space News
Tue, 28 Jan 2020 17:55:36 +0000
The five-year contract is to develop the Future Operationally Resilient Ground Evolution, or FORGE. SpaceNews.com
Tue, 28 Jan 2020 10:59:20 +0000
NASA has selected a startup led by a former International Space Station program manager to develop a commercial module for the station. SpaceNews.com
Tue, 28 Jan 2020 01:09:40 +0000
NASA Administrator Jim Bridenstine expressed reservations Jan. 27 about a NASA authorization bill introduced in the House last week that he fears could constrain the agency’s approach to human space exploration. SpaceNews.com
Mon, 27 Jan 2020 23:11:54 +0000
As OneWeb prepares to begin monthly launches for its broadband constellation, the company and a U.S. senator are urging the FCC to act on an application filed nearly two years ago for 1,260 more satellites. SpaceNews.com
Mon, 27 Jan 2020 22:28:10 +0000
EOS Defense Systems USA, a subsidiary of Electro Optic Systems Holdings Ltd. of Australia, plans to establish a space-based communications relay network with Audacy’s spectrum license. SpaceNews.com
Mon, 27 Jan 2020 21:19:28 +0000
The U.S. military drone strikes that killed Iranian Maj. Gen. Qasem Soleimani on Jan. 3 and Iran’s retaliatory ballistic missile attack on U.S. bases in Iraq a few days later were a stark illustration of the critical role of satellites. SpaceNews.com
Mon, 27 Jan 2020 19:12:18 +0000
British aerospace company QinetiQ received a 75 million euro ($82.6 million) contract from the European Space Agency to build a small satellite for ozone measurements.  SpaceNews.com
Mon, 27 Jan 2020 12:14:13 +0000
The Japanese space agency JAXA hopes to have an agreement in place outlining its contributions to NASA’s lunar exploration efforts in the next few months. SpaceNews.com
Sat, 25 Jan 2020 11:34:34 +0000
U.S. Space Force statement: The seal “honors the Department of the Air Force’s proud history” SpaceNews.com
Sat, 25 Jan 2020 00:49:22 +0000
The battery malfunction that put DirecTV’s Spaceway-1 satellite at risk of exploding has a “very low likelihood” of occuring on other satellites, according to the satellite’s manufacturer, Boeing.  SpaceNews.com
Sat, 25 Jan 2020 00:07:38 +0000
The leadership of the House Science Committee introduced a NASA authorization bill Jan. 24 that seeks to significantly alter NASA’s current plans to return humans to the moon and make them part of an effort to send humans to Mars. SpaceNews.com
Fri, 24 Jan 2020 22:55:55 +0000
A team of U.S. military and civilian defense officials spent most of 2019 drawing up plans to create a Space Force as a new service branch within the Air Force. But it wasn’t until Congress reached a deal in December on the 2020 National Defense Authorization Act that the Space Force went from concept to reality. SpaceNews.com
Fri, 24 Jan 2020 22:55:03 +0000
Getting the Space Force right and creating the first new U.S. armed service in more than half a century will be a herculean task. Meeting that growing challenge will require, first and foremost, getting Space Force acquisition right. SpaceNews.com
Fri, 24 Jan 2020 22:19:27 +0000
NASA has selected acting directors at two of its field centers to take those positions on a permanent basis. SpaceNews.com
Fri, 24 Jan 2020 21:15:20 +0000
Vector, the launch vehicle and smallsat technology company that filed for Chapter 11 bankruptcy in December, announced Jan. 24 it is proceeding with plans to sell its satellite technology to Lockheed Martin or another bidder. SpaceNews.com
Fri, 24 Jan 2020 16:02:27 +0000
SpaceX will launch Egyptian operator NileSat’s next communications satellite on a Falcon 9 rocket in 2022, SpaceXsaid Jan. 23. SpaceNews.com
Fri, 24 Jan 2020 00:37:35 +0000
NASA will turn off an aging infrared space telescope in a week, citing the complexities of continuing to operate the spacecraft as it drifts away from the Earth. SpaceNews.com
Thu, 23 Jan 2020 22:33:01 +0000
The Space Information Sharing and Analysis Center, or Space ISAC, will launch an unclassified portal where companies can share and analyze cybersecurity information. SpaceNews.com
Thu, 23 Jan 2020 22:02:16 +0000
Hoyt said observations from the U.S. military’s Space Surveillance Network showed the Prox-1 satellite deorbiting more than 24 times faster than before deploying the tape.  SpaceNews.com
Thu, 23 Jan 2020 21:48:43 +0000
The European Commission has “pre-booked” four launches using Europe’s next-generation Ariane 6 rocket. SpaceNews.com
More space news...
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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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