Publications associées à An Improved Formula for the Transfer Impedance of Two-Layer Braided Cable Shields

Performance Comparison of Cables With Partial Transposition

Pierluigi Bruzzone, Kamil Sedlák, Chiara Frittitta, Federica Demattè

The need of full transposition of the current carrying elements (strands) in large cables is frequently retained as top design criterion for conductors operating in pulsed mode. However, when the transposition error, i.e., the inductance difference among t ...

IEEE Institute of Electrical and Electronics Engineers2024

Electromagnetic time reversal for online partial discharge location in power cables: Influence of interfering reflections from grid components

Farhad Rachidi-Haeri, Marcos Rubinstein

In online single-sided partial discharge (PD) location, the measured PD reflection patterns are affected by the characteristics of all the components of the associated power network. This paper analyses the performance of a PD location method based on elec ...

2024

Interaction of lightning-generated electromagnetic fields with overhead and underground cables

Farhad Rachidi-Haeri, Marcos Rubinstein, Carlo Alberto Nucci

In this chapter, we discussed the TL theory and its application to the problem of lightning electromagnetic field coupling to transmission lines. After a short discussion on the underlying assumptions of the TL theory, we described seemingly different but ...

IET2022

A Closed Time-Reversal Cavity for Electromagnetic Waves in Transmission Line Networks

Farhad Rachidi-Haeri, Marcos Rubinstein, Mario Paolone, Reza Razzaghi, Zhaoyang Wang

A closed time-reversal (TR) cavity has been considered a purely theoretical concept whose experimental realization was assumed to be impossible. In this article, we demonstrate that it is, in fact, possible to realize a closed TR cavity using a network of ...

2021

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

Gianluca Antonini, Mario Paolone, Keyhan Sheshyekani, Reza Razzaghi, 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 ...

Elsevier2018

HTS high current cable for fusion application

Nikolay Bykovskiy

State-of-the-art magnets of fusion devices, which are based on low temperature superconductors (LTS), have almost reached their technological limits in terms of generated magnetic fields. Further progress can be made using novel high temperature supercondu ...

EPFL2017

Contribution to the study of the vulnerability of critical systems to Intentional Electromagnetic Interference (IEMI)

Nicolas Mora Parra

The progress of high power electromagnetic (HPEM) sources during the late 1990s raised the concern in the electromagnetic compatibility (EMC) community that they could be deployed for criminal purposes to interfere with the operation of modern electronic s ...

EPFL2016

Experimental Characterization of the Response of an Electrical and Communication Raceway to IEMI

Farhad Rachidi-Haeri, Marcos Rubinstein, Nicolas Mora Parra

This paper reports the results of two experimental campaigns aimed at studying the high-frequency response of a raceway containing low voltage power, telephone, and Ethernet cables, to external electromagnetic field illumination. The raceway was tested aga ...

Institute of Electrical and Electronics Engineers2016

Design Optimization of Round Strands Made by Twisted Stacks of HTS Tapes

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

Atwisted stack of high-temperature superconducting (HTS) tapes soldered into copper profiles was used as a strand in the fabrication of the 60-kA/ 12-T HTS cable prototype at the Center for Research in Plasma Physics (CRPP). Considering the strand in gener ...

IEEE Institute of Electrical and Electronics Engineers2016

Numerical Simulation of the Overall Transfer Impedance of Shielded Spacecraft Harness Cable Assemblies

Farhad Rachidi-Haeri, Nicolas Mora Parra

In this paper, we present general considerations for the application of the multiconductor transmission-line theory for simulating shielded spacecraft harness cable assemblies. Some of the practical issues that occur in the modeling process of various comp ...

Institute of Electrical and Electronics Engineers2015

Impact of Cable Twist Pitch on T-cs-Degradation and AC Loss in Nb3Sn Conductors for ITER Central Solenoids

Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák

The performance of tour Nb3Sn conductors for the ITER central solenoids was tested. The current sharing temperatures (T-cs) were measured over approximately 9000 electromagnetic cycles, including two or three thermal cycles between 4.2 K and room temperatu ...

IEEE Institute of Electrical and Electronics Engineers2014

Design and Strand Tests of a Fusion Cable Composed of Coated Conductor Tapes

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

The design of a flat cable suitable for future fusion reactors has been carried out. The cable consists of twisted round strands, which are composed of tapes stacked between copper profiles. According to calculations, the strand twist pitch and the cable t ...

IEEE Institute of Electrical and Electronics Engineers2014

High current superconductors for DEMO

Pierluigi Bruzzone, Boris Stepanov, Kamil Sedlák

In the assumption that DEMO will be an inductively driven tokamak, the number of load cycles will be in the range of several hundred thousands. The requirements for a new generation of Nb3Sn based high current conductors for DEMO are drafted starting from ...

Elsevier Science Sa2013

Electromagnetic Simulation of CERN Accelerator Components and Experimental Applications

Carlo Zannini

Wakes and impedances of single accelerator elements can be obtained by means of theoretical calculation, electromagnetic (EM) simulations or bench measurements. Since theoretical calculations apply only to simple structures and bench measurements have some ...

EPFL2013

Fabrication Trials of Round Strands Composed of Coated Conductor Tapes

Rainer Wesche, Pierluigi Bruzzone, Davide Uglietti

Various techniques have been proposed in order to assemble coated conductor tapes into high current strands. In this work, the preparation of high current capacity round strands starting from industrial coated conductors has been investigated. Round, twist ...

IEEE Institute of Electrical and Electronics Engineers2013

MgB2 Hollow Wires and Cables Embedded in a Mg Alloy Matrix

Pierluigi Bruzzone, Davide Uglietti

The brittleness of the MgB2 wires prevents performing a cable architecture with very small bending radius, similar to NbTi Rutherford cables. Consequently, it is important to reduce the thickness of the superconducting materials in order to increase its be ...

IEEE Institute of Electrical and Electronics Engineers2013

Testing of RF 100 m TF Qualification Conductor in the SULTAN Test Facility

Pierluigi Bruzzone, Boris Stepanov

A conductor for ITER toroidal field (TF) coils is the cable-in-conduit conductor (CICC) type, which is made of Nb3Sn superconducting strands encased in a stainless steel tubular jacket. A 120-m-long prototype has been designed in accordance with ITER requi ...

IEEE Institute of Electrical and Electronics Engineers2013

Preliminary Performance Test Results of First CICC From Korea Destined for an ITER TF Magnet

Pierluigi Bruzzone, Boris Stepanov, Kyungjin Kim

The Republic of Korea is participating in the ITER project to construct and operate the ITER tokamak for the purpose of demonstrating the feasibility of fusion power. ITER Korea, the implementing agency for the Republic of Korea that is procuring items for ...

IEEE Institute of Electrical and Electronics Engineers2013

Application of the Cascaded Transmission Line Theory of Paul and McKnight to the Evaluation of NEXT and FEXT in Twisted Wire Pair Bundles

Farhad Rachidi-Haeri, Marcos Rubinstein, Abraham Rubinstein, Abdolhamid Shoory, Carlos Alberto Romero Romero, Nicolas Mora Parra

The cascaded transmission line theory of Paul and McKnight is used in this paper to predict near-end crosstalk (NEXT) and far-end crosstalk (FEXT) in a bundle of twisted wire pairs. The approach is validated using the CST Cable Studio commercial software a ...

Ieee-Inst Electrical Electronics Engineers Inc2013

Lightning-induced currents in buried coaxial cables: A frequency-domain approach and its validation using rocket-triggered lightning

Farhad Rachidi-Haeri, Emanuel Petrache, Mario Paolone

The aim of this paper is to present an experimental validation of a frequency- domain approach to the solution of the lightning electromagnetic field-to- buried cable coupling equations. The coupling to the inner conductor is evaluated using the concept of ...

2007