Concept

Harmonics (electrical power)

Related publications (108)

A ball valve micropump in glass fabricated by powder blasting

Martinus Gijs, Christophe Yamahata, Frédéric Lacharme

We present the microfabrication and characterisation of a ball valve micropump in glass, which is magnetically actuated using the sinusoidal current of an external electromagnet. We employ the use of a simple powder blasting technology for microstructuring ...

2005

Unbalanced DC-link voltage regulation in a back-to-back 3-level PWM converter for a doubly-fed induction motor/generator.

Jean-Jacques Simond, André Hodder, Alexander Schwery

An unbalanced DC-link voltage regulation strategy is proposed for a three-level voltage source inverter used in the rotor cascade of a double-fed asynchronous motor-generator. The major problem in determining the presence of the unbalanced component is inv ...

2005

Optimal control of an induction heating process for thixoforming

Jacques Rappaz, Alexandre Masserey

We investigate in this paper a numerical method to control the temperature of an induction heating process through electric current parameters such as frequency and current voltage imposed to the terminals of the inductor. We seek a sinusoidal voltage func ...

2004

Power-bandwidth-distortion scaling laws for sensor networks

Martin Vetterli, Michael Christoph Gastpar

The goal of a class of sensor networks is to monitor an underlying physical reality at the highest possible fidelity. Sensors acquire noisy measurements and have to communicate them over a power- and possibly bandwidth-constrained interference channel to a ...

2004

Convertisseurs multiniveaux asymétriques alimentés par transformateurs multi-secondaires basse-fréquence

Joseph Song Manguelle

In the last years, static power converters have become widely used in various applications. They can be found in domestic applications, railways, urban and ship transport, and even in several industrial systems. Some of these applications require a high or ...

EPFL2004

Multilevel Inverter for Power System Applications : Highlighting Asymmetric Design Effects form a Supply Network Point of View

Alfred Rufer

This paper highlights some effects of an asymmetrical design on three phase multilevel inverters from a supply network point of view. The investigated topology is based on a series connection of single phase inverters (partial cell) in each phase. Each par ...

2003

An overview of results from the TCV tokamak

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Timothy Goodman, Yves Martin, Jean-Marc Moret, Stefano Alberti, Ivo Furno, Minh Quang Tran, Patrick Blanchard, Holger Reimerdes, Jean-Philippe Hogge, René Chavan, Laurie Porte, Alexander Karpushov, Damien Fasel, Xavier Llobet, Yanis Andrebe, Pierre Lavanchy, Ugo Siravo, Pierre Etienne, Henri Weisen, Jonathan Bryan Lister, Richard Pitts, Antoine Pochelon, Yann Camenen, Kurt Appert, Jan Horacek, Marco Wischmeier, Philippe Marmillod, Gilbert Tonetti, Albert Perez, Andrea Scarabosio, Gilles Arnoux, Blaise Marlétaz, Pierre-François Isoz, Igor Klimanov, Jean-Claude Magnin, Andrei Martynov, Petri Nikkola, Adriano Manini, Paolo Bosshard, Jean-Yves Favez, Edgar Scavino

The Tokamak Configuration Variable (TCV) tokamak (R = 0.88 m, a < 0.25 m, B < 1.54 T) programme is based on flexible plasma shaping and heating for studies of confinement, transport, control and power exhaust. Recent advances in fully sustained off-axis el ...

2003

Preliminary results of top launch third harmonic X-mode electron cyclotron heating in the TCV tokamak

Stefano Alberti, Jean-Philippe Hogge, Laurie Porte, Gilles Arnoux

The electron cyclotron heating (ECH) system in TCV has recently been upgraded to a total of 4.5 MW of installed power. In order to extend the density range of ECH-heated plasmas up to electron densities of 1.2 x 10(20) m(-3), three 0.5 MW gyrotrons at a fr ...

2003

SOLERO : Solar Powered Exploration Rover

Roland Siegwart, Pierre Lamon

This abstract presents a perform study on SOLERO, a new and innovative rover concept for regional mobility on planetary surfaces. A rover is the most suited element to bring scientific instrument to a specific site in order to examine geology, mineralogy o ...

2002

Open loop and closed loop spectral frequency active filtering

Alfred Rufer

This paper proposes two frequency based methods for parallel active filtering of current harmonics in utility grids. Active filter (AF) reference prediction and AF current control are the two key-points to obtain high performances. This paper deals with th ...

2002

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