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Reference : UMR8507-SEVLEB-001
Workplace : GIF SUR YVETTE,GIF SUR YVETTE
Date of publication : Thursday, October 01, 2020
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 January 2021
Proportion of work : Full time
Remuneration : between €2,606 and €2,688 gross monthly
Desired level of education : Higher than 5-year university degree
Experience required : 1 to 4 years
The work will consist in characterizing the heating of components and boards on a simulation bench deployed at the GeePs laboratory. This characterization will mainly be carried out by infrared thermography using specific equipment acquired for the project.
Prior to the measurement campaigns, the candidate will have to set up a calibration protocol for this IR camera adapted to the temperature range predicted by simulation, and optimize its installation on the experimental bench, in particular to obtain the best possible spatial resolution. During the study, the candidate will participate in the analysis of the results and will be required to regularly present the progress of the work during the bimonthly meetings organised by the coordinator. If necessary, he/she may propose changes to the bench fitting likely to reduce the observed heating during operation. At the end of the scheduled campaigns, the candidate will contribute to the writing of the planned reports in project deliverables.
The candidate must have a good knowledge of power electronics - and component integration - and in the thermal characterization of the heating phenomena of such components and systems. Experience in thermography would be a plus. He/she will also be asked to focus on the field of power connections on PCBs. Knowledge in the field of systems and converters for energy management in vehicles would be desirable. He/she should be attracted to teamwork and experimental development.
The subject is part of a "Future Investment" project financed by ADEME entitled Intelligent Battery Integrated System (IBIS) around the PSA (coordinator) and SAFT companies. This project aims to develop a major technological innovation by integrating the inverter, charger and converter functions into the energy storage battery of electric vehicles, by adding a switching system on each Li-ion cell. Thus, the mentioned components, which are currently external, would be eliminated and their function ensured by low voltage safety electronics (<60Vdc), with the double advantage of significantly reducing the cost of the electric powertrain and improving the vehicle's architectural efficiency. The two main technological building blocks required for the targeted innovation are conversion boards called "H-bridge" and "DC-DC". The components and boards will be developed and studied within the Lafayette Institute and the SATIE and GeePs laboratories. The latter are electrical engineering research actors linked to PSA since 2017 in the PSA@Paris-Saclay OpenLab "Electrical engineering for Mobility".
Constraints and risks
No specific constraints or risks identified
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