Publications de Yannick Louvrier

Weight and Efficiency Optimized DC/DC Converter Based on Multiple Interleaved Channels

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: decreasing the total masse of the system and increasing the efficiency of the overall system. This paper presen ...

2012

Weight and Efficiency Optimized DC/DC Converter based on Multiple Interleaved Channels

Alfred Rufer, 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. T ...

2011

Étude et optimisation d'un convertisseur DC/DC à canaux multiples entrelacés

Yannick Louvrier

In a context in which economy and ecology follow historically opposed trajectories, renewable energies appear as an interesting compromise. However, the energy production from these emerging technologies is well below that of their ancestors, and their cos ...

EPFL2010

Altitude Performance of Heat sink in Standard Atmosphere

Alfred Rufer, Yannick Louvrier

Power Electronic components require cooling to limit junction temperatures to ensure long and reliable operation. Heat sinks are used for cooling the components. In applications which entail operation at altitudes, derating factors are provided by manufact ...

2009

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

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

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

High Efficient Interleaved Multi-channel dc/dc Converter Dedicated to Mobile Applications

Alfred Rufer, Blaise Destraz, Yannick Louvrier

In the transportation field, the empty weight of the vehicle has to be as light as possible in order to have the highest energetic efficiency. For onboard storage electrical systems, dc/dc converters are usually used to control the power flows in the vehic ...

2006