Link to the 2024 highlights
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Comparative analysis of multi-level inverter topologies utilizing WBG components
European project ARCHIMEDES studies power components durability in the frame of more electric mobility. 2025 is the year for the contributions of G2ELa to the project with 5 research engineers and post-doc who have developed i) a characterization bench to derive digital twin parameters to asses remaining useful lifetime (RUL) of GaN devices, ii) power modules integrating decoupling silicon caps to reduce switching stressors, and iii) several parametric life cycle inventory models to support decision making at each life cycle stage (design, manufacture, use and end of life).
Involved persons: The work was carried out with supports from Fatimata-Fatim Diarrassouba, Wassin Bougda, Thibault Abry, Noé Bourdon et Jiadong Liu, with the scientific supervision of Yvan Avenas, Adrien Corne, Jean-Michel Guichon, Yves Lembeye, Jean-Luc Schanen et Jean-Christophe Crébier. Several partners of the projects were involvedin some of G2Elab contributions with mainly: STMicroélectronics, Schaeffler, Murata, IRT St Exupéry, Université de Stuttgart.
Closing seminar for the first round of funding for the Cross-Disciplinary Programme
The final seminar of the PowerAlps Cross-Disciplinary Programme (CDP) brought together the scientific and industrial community in the field of power electronics for two days of fruitful discussion. Highlights: presentation of the White Paper drafted by the project’s team of economists, scientific results, and a keynote speech by Marc Plissonier (CEA). The second day featured scientific sessions co-organised with the GDR SEEDS.
Involved persons: The seminar wouldn’t have been possible without : Jean-Luc Schanen (G2ELab), Romain Gwoziecki (CEA), Yvan Avenas (G2ELab), Laëtitia Guilhot (CREG, UGA), Cristina Rigo (UGA).
Sustainability issues in power electronics research: an ethnography
This report presents the results of an institutional ethnographic study conducted between September 2024 and March 2025 that has been done in few power electronics laboratories and especially in the Power Electronics team of the G2Elab. This ethnographic study aims to identify obstacles and opportunities for better integration of sustainability issues into research practices in Power Electronics.
Involved persons: Involved persons in this research activity are: Silvio Clément (Research Engineer), Claire Hugonnier (Associate Professor, LIDILEM), Maud Rio (Associate Professor, GSCOP), Pierre Lefranc (Associate Professor, G2Elab.
Commercial-inspired photovoltaic DC-AC inverter, redisigned on biosourced substrate
This award winning work (IEEE ISSE 2025) is a comparative study of 2 printed circuit board (PCB) designs inspired from a commercial photovoltaic micro-inverter (DC-AC block). First one is the reference design, close to the commercial design, on a 4 layers FR4 PCB. Second one is the ecodesign approach, an adaptation on a 2 layers biosourced and biodegradable PCB manufactured by Meshlin in the context of the DESIRE4EU EIC project. Through-PCB thermal dissipation and EMC performance were assessed.
Involved persons: Involved persons in this research activity are: Vincent GRENNERAT (CROMA/G2Elab), Pierre-Olivier JEANNIN (G2Elab), Pascal Xavier (CROMA), Attila GÉCZY (BME-ETT)
Control and optimization of modular GaN converter for applications with multiple source of energy
An exhaustive analysis of all possible configurations for a DAB converter makes it possible to identify a whole range of control strategies, some of which had never been documented before. They were implemented for a modular GaN converter intended for multiple energy sources. Their impact in terms of EMC was also studied..
Involved persons: Involved persons in this research activity are Kubilay Sahin (Ph.D Student), Sébastien Mariéthoz (PR Berner FahrHochschule), Jean-Luc Schanen (PR G-INP UGA), Yann Cuenin (Engineer Studer Innotec).
Modular, removable power package cooled by an insulating liquid
In this research project conducted in collaboration with the CEA, a proof of concept for a removable power module cooled by an insulating liquid was proposed. This device is modular, with each semiconductor sandwiched between two heat sinks. These heat sinks also serve as electrodes, enabling the components to be connected to their environment. This work received a “Best Presentation Award” at the APEC 2025 conference.
Involved persons: The people involved are Omar Sanjakdar (Ph.D. student) and his advisors Rachelle Hanna (G2Elab), Guillaume Piquet-Boisson (CEA INES), Emmanuel Marcault (CEA Toulouse), and Yvan Avenas (G2Elab).