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Study of flexible operating conditions in variable-speed hydraulic turbines : advanced models and experimental validation

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A Shoe-Equipped Linear Generator for Energy Harvesting

Dan Shi, Jianxin Shen

In this paper, a linear tubular generator is presented. It is used for an energy harvesting system equipped in a footwear, scavenging power from forward motion during a walk. Configuration of the generator is studied, and geometric optimization by finite-e ...

Ieee-Inst Electrical Electronics Engineers Inc2013

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In real time scenario, transmission (of power) in power systems may not be always ideal i.e. they may be interrupted. As a result, the synchronization among the power generating modules may be lost. Loss of synchronization has a direct effect on the stabil ...

IEEE2013

Distributed Real-Time Dynamic Security Assessment Using Intelligent Techniques

Maher Kayal, Theodoros Kyriakidis, Karthik Kumar

Ieee2013

This work is part of the innovative "Active Generator" (AG) project. AG is a concept that suggests a new arrangement of the turbine-generator line of a high power utility (a few hundred of MW) in order to de-synchronize the rotation speed of the turbine-ge ...

EPFL2012

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A generator of very short pulses where a cascade of inverters of arbitrary length characterized in that said inverters are adapted to produce pulses on their power supply line instead of their usual output. ...

2012

With economical energy market strategies based on instantaneous pricings of electricity as function of the demand or the predictions, operators harness more hydroelectric facilities to off-design operating points to cover the variations of the electricity ...

EPFL2011

This paper presents preliminary results in the frame of the development of a very high speed synchronous drive with a rated power of 6 kW at the rated speed of 180 krpm taking place in the context of a university-industry partnership. Due to the very high ...

Ieee2011

Flood retention in alpine catchments equipped with complex hydropower schemes - A case study of the upper Aare catchment in Switzerland

Anton Schleiss, Martin Peter Bieri, Frédéric Jordan, Alain Fankhauser

The simulation of run-off in alpine catchment areas is an important issue for the optimal operation of hydropower plants for normal flow conditions, but also during flood events. A semi-lumped numerical approach combines hydrological modelling and operatio ...

CRC Press, Taylor & Francis Group2010

Hydrologisch-hydraulische Modellierung von alpinen Einzugsgebieten mit komplexen Krafwerksanlagen

Anton Schleiss, Martin Peter Bieri

The simulation of run-off in an alpine catchment area equipped with complex hydropower schemes is presented by the help of an especially developed tool, called Routing System, which can combine hydrological modelling and operation of hydraulic elements. Th ...

2010

New slip synthesis and theoretical approach of CVT slip control

Yves Rothenbühler

Today's vehicle must be efficient in terms of gas (CO2, NOx) emissions and fuel consumption. Due to improvements in material and oil, the continuous variable transmission (CVT) is now making a breakthrough in the automotive market. The CVT decouples the en ...

EPFL2009