Publication

Prediction of resistive and hysteretic losses in a multi-layer high-Tc superconducting cable

Publications associées (53)

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Finite Element Method Modelling of Superconductors: from 2D to 3D

Francesco Grilli, Bertrand Dutoit

A 3D numerical modelling technique for solving problems involving superconducting materials is presented. The model is implemented in finite element method software and is based on a recently developed 3D formulation for general electro-magnetic problems w ...

2004

Method of manufacturing discrete electronic components

Martinus Gijs

The manufacturing method for components of the inductive type, in particular inductance coils, transformers or antennae, consists in making by micro-machining simultaneously on a first substrate made of magnetic material a plurality of first parts (1) conn ...

2004

A new integrated match for CPW-fed slot antennas

Juan Ramon Mosig, Julien Perruisseau-Carrier

A new, compact way to match slot antennas to a coplanar waveguide (CPW) feed is presented. In addition to its advantages of flexibility, reduced size, and increased bandwidth, a good analytical approximation of the matched antenna behavior is possible. An ...

2004

A Novel All-Fiber Configuration for a Flexible Polarimetric Current Sensor

Luc Thévenaz, Dario Alasia

This set-up is particularly simple and makes possible the use of a flexible cable that may be plugged to the instrument using connectors for easy field applications. Measurements of AC and DC currents are demonstrated. ...

IECE2003

Application of the code THEA to the CONDOPT experiment in SULTAN

Pierluigi Bruzzone, Luca Bottura

The CONDOPT (CONDuctor OPTimization) experiment has been recently completed in SULTAN. The current sharing behavior of Nb-3 Sn samples was assessed as a function of the number of cyclic loads experienced during current sweeps in a 10 T background field. We ...

2002

Hysteresis Modelling of High Temperature Superconductors

Marten Sjöström

The present dissertation considers the capabilities, limitations and possible extensions of modelling the hysteresis that is exhibited by type-II superconductors, especially those with high critical temperature. Superconductors of type-II, including high t ...

2001

Hysteresis modelling of high temperature superconductors

Marten Sjöström

EPFL2001

Losses in HTS Tapes due to AC External Magnetic Field and AC Transport Current

Bertrand Dutoit, Marten Sjöström

The E-J power law as electric characterization of the HTS material in Finite Element computations has shown good agreement with measurements of field-dependent crtical current density and losses due to transport current. We use this technique to investigat ...

2000

A new parameter identification method for induction machines.

Mai Tu Xuan, Alexander Schwery

The present paper describes a new parameter identification method for induction machines. This method requires only a start-up test during which speed as well as stator currents and voltages are measured. The processing ot these quantities by identificatio ...

1998

Frequency dependence of A.c. loss in Bi(2223)Ag sheathed tapes

Bertrand Dutoit

The a.c. self-field loss in Bi(2223)Ag sheathed tapes with different number of filaments has been measured between 59 and 2500 Hz by means of a dual lock-in amplifier. Due to the wide frequency range of the measurements we have been able to dissociate quan ...

1998