Concept

Courant biphasé

Publications associées (118)

Exploring potential benefits of bridge condition assessment in highway operations

In recent years, an increasing number of private firms are involved in public works using the funding strategy of public-private partnerships (PPPs), especially for civil infrastructure projects such as highways and bridges. In this paper, a framework is p ...

IABSE2019

On the Properties of the Compound Nodal Admittance Matrix of Polyphase Power Systems

Mario Paolone, Andreas Martin Kettner

Most techniques for power system analysis model the grid by exact electrical circuits. For instance, in power flow study, state estimation, and voltage stability assessment, the use of admittance parameters (i.e., the nodal admittance matrix) and hybrid pa ...

2018

Locating lightning strikes and flashovers along overhead power transmission lines using electromagnetic time reversal

Mario Paolone, Gianluca Antonini, Reza Razzaghi, Keyhan Sheshyekani, Marco Scatena

The paper presents a method to identify the location of direct lightning strikes to overhead transmission lines and potential subsequent flashover(s). The method is based on the electromagnetic time reversal theory and relies on the use of a single measure ...

2018

On Non-Uniform Transient Electromagnetic Field Coupling to Overhead Transmission Lines

Jun Guo

Transient electromagnetic fields can couple to overhead power transmission and distribution lines, causing damage to the connected equipment. In real cases, incident electromagnetic fields exhibit different spatial and temporal waveform distributions along ...

2018

Six-Step MMC-Based High Power DC-DC Converter

Drazen Dujic, Stefan Milovanovic

Roth DC collection and transmission grids have enjoyed a lot of popularity lately. In order to successfully take advantage of the benefits offered by DC systems, reliable connection between two networks of different voltage levels has to be obtained. This ...

IEEE2018

Zero refractive index in time-Floquet acoustic metamaterials

Romain Christophe Rémy Fleury, Theodoros Koutserimpas

New scientific investigations of artificially structured materials and experiments have exhibit wave manipulation to the extreme. In particular, zero refractive index metamaterials have been on the front line of wave physics research for their unique wave ...

2018

Effect of dimensions on embodied environmental impact of buildings

Guillaume Habert, Endrit Hoxha

Designers are faced with many options on material and technical solutions during the design phase of the building. Different studies proposing solutions and guidelines are presented in the literature. They help to guide the building project toward low CO2- ...

2017

Membrane-less micro fuel cell based on two-phase flow

Demetri Psaltis, Miguel Antonio Modestino, Seyyed Mohammad Hosseini Hashemi, Pooria Hadikhani

Most microfluidic fuel cells use highly soluble fuels and oxidants in streams of liquid electrolytes to overcome the mass transport limitations that result from the low solubility of gaseous reactants such as hydrogen and oxygen. In this work, we address t ...

2017

Phase Corrected H-Plane Horn Antenna in Gap SIW Technology

Juan Ramon Mosig, Marc Esquius Morote, Lei Wang

This communication introduces a modified substrate integrated waveguide (SIW), the gap SIW, and deduces an approximate closed-form expression for calculating its effective width, taking into account the fringing and coupling fields around the gap. As an im ...

Ieee-Inst Electrical Electronics Engineers Inc2017

Feasibility study of a CO2-based system in NEST

François Maréchal, Luc Girardin, Raluca-Ancuta Suciu

The NEST building laboratory of Empa and Eawag is a modular research and innovation demonstrator where new technologies, materials and systems are tested, researched, honed and validated in realistic conditions. In the NEST concept, only the supporting str ...

Industrial Process and Energy Systems Engineering Group, EPFL Valais Wallis2017

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