P
Pierre Lefranc
Researcher at Supélec
Publications - 48
Citations - 657
Pierre Lefranc is an academic researcher from Supélec. The author has contributed to research in topics: Buck converter & Converters. The author has an hindex of 11, co-authored 45 publications receiving 605 citations. Previous affiliations of Pierre Lefranc include United States Department of Energy.
Papers
More filters
Journal ArticleDOI
An Energy-Based Controller for HVDC Modular Multilevel Converter in Decoupled Double Synchronous Reference Frame for Voltage Oscillation Reduction
Gilbert Bergna,E. Berne,Philippe Egrot,Pierre Lefranc,Amir Arzande,J.-C. Vannier,Marta Molinas +6 more
TL;DR: A regulation strategy capable of controlling the energy stored in the modular multilevel converter (MMC) in an HVDC configuration by regulating the positive, negative, and zero sequences in dqo coordinates of the differential current using two rotating reference frames.
Journal ArticleDOI
Presizing Methodology of DC–DC Converters Using Optimization Under Multiphysic Constraints: Application to a Buck Converter
TL;DR: The developed methodology proposes a progressive approach to answer industrial needs when presizing power converters by reducing significantly the computing time which is suitable in a presizing phase where several parameters must be optimized and multiphysic constraints must be respected.
Proceedings ArticleDOI
Mitigating DC-side power oscillations and negative sequence load currents in Modular Multilevel Converters under unbalanced faults- first approach using resonant PI
Gilbert Bergna,Jon Are Suul,E. Berne,Philippe Egrot,Pierre Lefranc,J.-C. Vannier,Marta Molinas +6 more
TL;DR: This work presents a simple approach to eliminate DC power ripple in a three-phase Modular Multilevel Converter while operating with balanced (load) currents during unbalanced grid faults.
Journal ArticleDOI
Virtual prototyping and pre-sizing methodology for buck DC-DC converters using genetic algorithms
TL;DR: In this paper, the authors study the pre-sizing approach of DC-DC buck converters, which is suitable to obtain a preliminary precise sizing of a sub-system, allowing the system designer to perform a feasibility analysis of an overall system.
Journal ArticleDOI
Advanced control laws of DC-DC converters based on piecewise affine modelling. Application to a step-down converter
TL;DR: In this paper, two control techniques for a buck converter operating in continuous conduction mode at a fixed switching frequency are proposed: piecewise linear (PWL) state-feedback controller and model predictive control.