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L’électrification intelligente au service de la transition énergétique

Smart electrification towards energy transition

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Highlights 2021



 

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Caractérisation CEM convertisseur GaN

To be completed

SiC-MOSFET series-connected at 8kV-70A, 170V/ns at turn-off and 540V/ns at turn-on

A switching cell with 6 series-connected SiC-MOSFET has been optimized and built (passive equilibrum with RDC circuits). The switching speed reached are 170V/ns at turn-off and 540V/ns at turn-off with a voltage bus of 8kV with a current of 70A.
Involved persons: Cédric MATHIEU DE VIENNE (PhD candidate), Pierre LEFRANC (Associate Prof. G-INP), Pierre-Olivier JEANNIN (Associate Prof. UGA), Bruno LEFEBVRE (Engineer Supergrid Institute), Besar ASSLANI (Engineer Supergrid Institute)

Caractérisation d’un câble de puissance multibrins

To be completed

Modular inverter with double sided air cooling

The inverter is based on the TAPIR technology (compacT and modulAr Power modules with IntegRated cooling). Three elementary switching cells with double sided air cooling (thermal resistance less than 1 K/W) are implemented. These cells incorporate decoupling capacitors as close as possible to semiconductor chips, and have a stray inductance of 1.5 nH. They are therefore adapted to work with high-speed switching devices.
Involved persons: Involved persons in this research activity are : Wendpanga Fadel Bikinga (PhD student), Bachir Mezrag (Engineer), Alexis Derbey (Engineer), Yvan Avenas (Ass. Prof. Grenoble-INP/UGA)

Modelling and stability analysis of a Microgrid with high levels of Power Electronic insertion

The development of AC Microgrids with high insertion of power electronic conversion systems may expose them to new stability issues. The objective of this work was to develop small signal models of conversion systems couple to them of the network elements to determine the causes of instabilities, identify the most critical ones and propose new control loops for the conversion systems in order to ensure the overall stability of the grids.
Involved persons: This work has been made in a co-tutelle PhD between G2Elab and NTU university in Singapore and involved Ke GUO (PhD candidate), David FREY (MCF UGA) and Tang YI (Assoc. Prof NTI Singapour)

Modular multicell battery inverter charger

G2Elab develops an approach to design and manufacture modular power electronics converters based on the association of standardized bricks. This approach was applied to meet the needs of Lancey Energy Storage, which was looking for a modular, scalable battery interface for its main product, an intelligent electric radiator with electrical energy storage. This work has shown that the modular approach can meet a wide range of applications while offering reduced design times.
Involved persons: This work, funded by Carnot Energie du Futur and Lancey Energy Storage, involved André ANDRETA (Post Doc), Yves LEMBEYE (PR UGA), Jean-Christophe CREBIER (DR CNRS).

Date of update May 10, 2024

Université Grenoble Alpes