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Philippe Barrade

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Related publications (48)

Weight and efficiency optimization strategy of an interleaved DC-DC converter for a solar aircraft

Alfred Rufer, Philippe Barrade, Yannick Louvrier

Today, energy saving is one of the main objectives for engineers. In the case of mobile applications, energy can be saved by two different ways. First, decreasing the total masse of the system, and second, increasing the efficiency of the overall system.Th ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

The Monophasor Theory: Analytical Development and Practical Demonstration on a Single Phase Voltage Source Inverter

Alfred Rufer, Philippe Barrade, Yannick Louvrier, Stephan Kenzelmann

A method for simplifying the analytical treatment of single phase systems is introduced. This method, called monophasor theory, makes it possible to apply the same calculation methods and control strategies used for three-phase systems. This way, the spaci ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Possibilities of reduction of the on-board energy for an innovative subway

Philippe Barrade

An innovative subway has been proposed using supercapacitors as energy source. In this paper, are presented different possibilities to reduce on-board stored energy in order to downsize the on-board energy storage subsystem. Special attention is paid to th ...

2009

Sizing of a Supercapacitive Tank: Finite Elements Thermal Modelling

Alfred Rufer, Philippe Barrade

The sizing process of a supercapacitive tank is today a well-known procedure. It enables the identification of the number of cells needed to match energy requirements. In some cases, this number must be increased, in order to match the power needs of the a ...

2008

STUDY AND IMPLEMENTATION OF “DROOP CONTROL” METHODS FOR INTERFACING VOLTAGE SOURCE INVERTERS TO MINIGRID

Philippe Barrade

This contribution presents control methods for the regulation of the voltage and the frequency on AC minigrids, fed by voltage source inverters (VSI). In order to avoid a complex communication network for the synchronization of the various VSI on a minigri ...

2008

Energy storage systems

Daniel Favrat, Alfred Rufer, Philippe Barrade

Different types of energy storage systems are described, in particular hydro-pneumatic storage systems. In one, energy is stored by compressing gas in a chamber (44,45,54,55) with a liquid piston and released by gas expansion. A spray head or grid at the t ...

2008

Multiphysic Modeling of a Hybrid Propulsion System for a Racecar Application

Alfred Rufer, Philippe Barrade

A hybrid propulsion system has been designed for an optional use in the Formula S2000, based on supercapacitive energy storage coupled to an ICE engine via a Synchronous PM machine. Because of the high level specification of the weight penalty in competiti ...

2008

Replacement and emulation of a lead-acid battery with supercapacitors for a UPS application

Alfred Rufer, Philippe Barrade, Yannick Louvrier

This contribution proposes the study of an ‘On-Line’ UPS, where adaptations have been made to replace the initial batteries with supercapacitors. As the electrical behavior of supercapacitors is different from that one of lead-acid batteries, a power elect ...

2008

Application de supercondensateurs dans le transport individuel Etude expérimentale d’un scooter électrique avec assistance en puissance

Alfred Rufer, Blaise Destraz, Philippe Barrade

La plupart des véhicules électriques utilisent des accumulateurs électrochimiques qui sont sollicités par des puissances instantanées élevées. Ces derniers posent le problème de leur longévité et du rendement énergétique. Cet article présente une approche ...

2008

Caractérisation de cellules photovoltaïques avec prise en compte de l’ombrage pour un dirigeable stratosphérique

Alfred Rufer, Philippe Barrade, Yannick Louvrier

Suite à la prise de conscience collective du réchauffement climatique, les domaines d’application des cellules photovoltaïques se sont diversifiés donnant naissance à des projets dont la complexité aboutit logiquement à la conception de nouveaux moyens d’a ...

2008

En route avec un train hybride diesel-électrique

Alfred Rufer, Blaise Destraz, Philippe Barrade

Le surcoût d'une locomotive hybride équipée de supercondensateurs peut être amorti en dix ans, grâce à l'économie d'énergie réalisée, qui est d'environ 40%. ...

2008

Study and Simulation of the Energy Balance of an Urban Transportation Network

Alfred Rufer, Blaise Destraz, Philippe Barrade

This paper proposes and studies new strategies for an increase of the energetic efficiency of an urban transportation network fed with catenaries. A simulation tool has been developed to determine the energy efficiency on the global transportation system ( ...

2007

New self-switching mechanisms for active bidirectional switches

Alfred Rufer, Philippe Barrade, Daniel Siemaszko

The self-switching principle is a synthesis of synchronous type switching and switch inner protection mechanisms. Both switch ON and switch OFF are performed on the base of current and voltage measurement across the switch. Applied to an active bidirection ...

2007

The Active Self-controlled Free-wheeling Management Principle Applied to Reverse Recovery Losses Reduction

Alfred Rufer, Philippe Barrade, Daniel Siemaszko

Several works suggest the imminent appearance of bidirectional active devices. The promised performances go in the direction of a reverse recovery effects reduction and efficiency improvement. Our purpose is the study of an active management for switches t ...

2007

Experimentation and study of an electric scooter assisted by supercapacitors

Alfred Rufer, Philippe Barrade

Electric vehicles are mainly fed directly from batteries, where the high power solicitation represents a well-known problem with its relation to efficiency and life cycle of batteries. The paper presents experimentation and study of a solution with power a ...

2007

A new interleaved multi-channel DC/DC converter specially dedicated to low voltage, high current applications

Alfred Rufer, Blaise Destraz, Philippe Barrade

Making transportation systems more energy efficient is one of the key challenge in this century. This paper presents a solution for increasing the efficiency of an electrical scooter by adding a supercapacitive energy storage in parallel to the original ba ...

2006

Étude des commutations pour interrupteurs quatre quadrants, exemple d'application utilisant les transistors MOS

Alfred Rufer, Philippe Barrade, Daniel Siemaszko

Cette recherche s’inscrit dans un travail de thèse sur l’utilisation de nouveaux types de composants de puissance et l’étude de nouveaux types de commutations. En premier lieu, ce travail présente la conception d’un interrupteur bidirectionnel en courant e ...

2006

An Energy-Flow Based Methodology - Application to hybrid vehicles

Alfred Rufer, Philippe Barrade

A new methodology is presented, based on energy-flow analysis on systems. The aim is to obtain a representation of energy flows between the various sources of a complex system, via energy storage devices connected together with electrical and mechanical co ...

2006

Design and Control of a Supercapacitor Storage System for Traction Applications

Alfred Rufer, Philippe Barrade

The storage system in this paper is made of supercapacitors. The main goal is to ensure an efficient energy management in a series hybrid vehicle, even if braking resistors are still needed. Design considerations are discussed. In particular the influence ...

2005

A new solution for increasing the efficiency of an electric scooter with supercapacitors through a novel, interleaved multi-channel DC/DC converter

Alfred Rufer, Blaise Destraz, Philippe Barrade

Scooters are a well-established transport system for short distances – particularly within cities. Currently, the majority of scooters are petrol powered. Their engines typically exhibit bad efficiencies and thus contribute to global warming by CO2 product ...

2005

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