Projects in collaboration with AIRBUS, VITESCO and IRT Saint-Exupery
Power modules are used to build inverter in order, typically to convert energy from DC supply to AC supply. As part of the several automotive and aircraft projects in the context of the More Electric Transport, we seek to characterize the thermal behavior of power modules integrating Wide Band Gap components. The cooling may be done by liquid or 2-phase cooling systems.
The main objective of the projects is to simulate the thermal-fluid behavior of the power module but also to measure the junction temperature using different TSEPs (temperature sensitive electrical parameter). The test benches of full operating at Icam lab in Toulouse. This characterization may be carried out in steady-state or transient-state in order to calculate the thermal resistance or the thermal impedance.
The comparison between numerical and experimental results allow to optimize the design of the power module and the efficiency of the cooling solution to guarantee the performance and the reliability. But the comparison between the impedance curves also identify the potential divergence point between them and the calculation of the transient time where the potential defaults (delamination or voids) take place. The maturity of the technology may then be increased.
The methodology will be tested for innovative ceramic substrate and innovative power modules for the More Electric Aircraft of the Hybrid/Electric Automotive.
Sanchez, S., Nguyen, C., Cadile, C., Fradin, J. P., Tounsi, P., & Reynes, J. M. (2020). Electrothermal Characterization of Double-Sided Cooling Si Power Module. ELECTRIMACS 2019: Selected Papers-Volume 1, 615, 59. https://www.researchgate.net/publication/340792508_Experimental_a nd_numerical_Zth_determination_for_a_double-side_cooling_Si_module
The candidate should have good skills for reading scientific articles, for experimentation, analytical, writing and communication skills (in French and English).
Knowledge of power electronics is mandatory and knowledge in thermal management and CFD code such as Ansys Fluent would be an asset.
Excellent interpersonal skills, thoroughness and a good ability to work in a team are expected.