Concept

Motor–generator

Related publications (95)

Maximum Efficiency Point Tracking for Adjustable-Speed Small Hydro Power Plant

The paper presents the general scheme and the relevant implementation of a Maximum Efficiency Point Tracking (MEPT) system for a Small Hydro Power (SHP) plant equipped with a variable-speed generator. This last consists of a Doubly Fed Induction Generator ...

2008

A permeable magnetocaloric material and a magnetic refrigerator, a heat pump or a power generator using this material

Didier Albert Simon Vuarnoz

The present invention concerns a permeable-magnetocaloric material for a magnetic refrigerator, a heat pump or a power generator comprising at least a magnet assembly for the generation of a magnetic field, a body disposed at least partially in said magnet ...

Cabinet Roland Nithardt2008

A two-motor centre-driven winder drive with a reduced switch count

Drazen Dujic

Industrial applications often require two (or more) variable speed electric drives, which have to be controlled independently. An example is a centre-driven two-motor winder, where ac machines are traditionally supplied from their individual three-phase vo ...

IEEE2008

Convertisseur de fréquence indirect à rapport de tension fixe

Aziza Benaboud

Many electric power generators use gas turbines as power sources. Typically they are connected to the turbines through a mechanical gearbox in order to adapt their synchronous speed to the optimal rotation speed of the turbine, which is very often much hig ...

EPFL2007

A Multilevel Power Converter with Integrated Storage for Particle Accelerators

Alfred Rufer

The PS accelerator (Proton-Synchrotron) at CERN (European Organization for Nuclear Research) is composed of one hundred magnets connected in series. During a cycle of 2.4 seconds, the active power at the magnets terminals varies from plus to minus 40 MW. A ...

2007

A CLOSED LOOP CONTROL STRATEGY FOR A FREQUENCY-ONLY CONVERTER WITH HIGH EFFICIENCY

Alfred Rufer, Aziza Benaboud

Many electric power generators use gas turbines as power sources, coupled through a mechanical gearbox in order to adapt their synchronous speed to the optimal rotation speed of the turbine. This paper proposes to replace the mechanical gearbox with a flex ...

2007

Optimal operating point calculation for medium voltage distribution systems

Mario Paolone

The paper deals with the calculation of the optimal working point of a distribution system, equipped with several distributed generators, able to operate also autonomously, i.e. disconnected from the main grid. When connected to the main grid, it appears i ...

2007

Results of contact resistance distribution in NbTi and Nb3SnITER conductor termination

Pierluigi Bruzzone, Boris Stepanov

The contact resistance distribution among the current-carrying elements of three ITER conductor terminations is measured in the JORDI (JOint Resistance DIstribution) test facility at CRPP. One sample is based on Nb3Sn strands, the other two are NbTi cable- ...

2007

A New Quadratic, Three-Level, DC/DC Converter Suitable for Fuel Cell Applications

Alfred Rufer

This paper presents a new non-insulated quadratic three-level DC-DC boost converter. The quadratic feature is interesting for application where a wide voltage range is necessary. Since it is a current-source converter, its application in a fuel cell energy ...

2007

Computations of AC loss in the ITER magnets, during fast field transients

Pierluigi Bruzzone, Jonathan Bryan Lister, Luca Bottura

The calculation of AC loss due to the control currents in ITER is a cumbersome task. The reason is that control transients require small field changes (0.1 T or less) at moderate frequency (up to 10 Hz), where effects of partial penetration of the filament ...

2007

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