Nos publications scientifiques
A 100 kW 1.2 kV 20 kHz DC-DC converter prototype based on the Dual Active Bridge topology
This article presents the design, the fabrication, and the test of an isolated DC-DC converter for renewable energy applications. The converter is based on the Dual Active Bridge topology and uses silicon carbide power semiconductors and a medium frequency transformer. The design process covers hardware ranging from the semiconductor die to the complete power converter. For the control, a rapid prototyping approach was used. The experimental validation of the 100 kW prototype is presented.
Optimal sizing of a power electronic traction transformer for railway applications
This paper presents a methodology to optimize the sizing of such power converters in order to compare different topologies for a given application. The proposed procedure maximises the efficiency of the converter under a limited volume.
Uncertainty Quantification for the Eulerian-Lagrangian simulation of evaporating sprays
Evaporating sprays can be almost routinely simulated using an Eulerian-Lagrangian approach which relies on a RANS modeling of the continuous phase and a Lagrangian description of the discrete phase, including a turbulent dispersion model to express the effect of turbulent fluctuations within the carrier phase on the spray particles and an evaporation model for the spray droplets.
Semi-Analytical Methods for Calculation of Leakage Inductance and Frequency-Dependent Resistance of Windings in Transformers
This paper focuses on analytical or semi-analytical calculation techniques to be integrated into a medium frequency transformer optimization process.
Partial discharges for diagnosis of cavity growth under harmonics in HVDC XLPE model cables
This paper presents results carried out on polymeric high voltage direct current (HVDC) model cable. Two aspects are considered: partial discharge (PD) and current measurements, with the aim at investigating possible growth of voids of micrometer size.
Partial discharges for diagnosis of cavity growth under harmonics in HVDC XLPE model cables
This paper presents results carried out on polymeric high voltage direct current (HVDC) model cable. Two aspects are considered: partial discharge (PD) and current measurements, with the aim at investigating possible growth of voids of micrometer size.
High Voltage Electrical Properties of Epoxy / h-BN Microcomposites
Two high voltage properties – DC conductivity and AC breakdown strength – of epoxy composites filled with 30 wt% of micron sized hexagonal boron nitride (h-BN) are discussed in comparison to neat epoxy.
Theoretical and experimental analysis of the soft switching process for SiC MOSFETs based Dual Active Bridge converters
In the new electrical grids, series/parallel converters architectures can be considered for medium and high voltage power conversion. Dual Active Bridge (DAB) topology is a serious candidate to be implemented within these converters.
Overview of DC-DC Converters dedicated to HVDC Grids
This paper presents an overview of the DC-DC power converters dedicated to HVDC proposing a classification based on their structure.
Design of a 4-Phase Intercell Transformer Converter for a Space Charge Measuring System
This paper presents the design of a power electronics converter to produce strong current pulses (about 400A) in the core of a HVDC cable in order to use the thermal step method to evaluate the ageing state of the dielectric component. The described converter uses a magnetic coupler with intercells transformers and is current controlled. Index Terms—magnetic coupler; intercell transformer; high current pulses; thermal step method; dielectrics.
