Concept

Transformer types

Related publications (222)

Poly-Phased Matrix Converter for large Synchronous Generators - Design of the Voltage Surge Protection

This paper introduces a special mx3 matrix converter connected between the stator of a poly-phased synchronous generator and a power grid. Some commutations of the chosen switching scheme induce voltage surges due to leakage inductances of the generator. T ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Eddy current power losses in a toroidal laminated core with rectangular cross section

Yves Perriard, Miroslav Markovic

The paper presents a completely analytical solution for the magnetic field, the induced eddy currents and corresponding losses in a toroidal laminated core with a rectangular cross section. The diffusion equation is analytically solved using a separation o ...

2009

Experimental verification of broadband cloaking using a volumetric cloak composed of periodically stacked cylindrical transmission-line networks

Juan Ramon Mosig, Frédéric Bongard, Jean-François Zürcher

Cloaking using a volumetric structure composed of stacked two-dimensional transmission-line networks is verified with numerical simulations and measurements. The measurements are done in a waveguide, in which an array of metal cylinders is inserted causing ...

2009

Analysis of Empirical Core Loss Evaluation Methods For Non-Sinusoidally Fed Medium Frequency Power Transformers

Alfred Rufer, Frédéric Zurkinden, Irma Villar

Nowadays medium voltage conversion systems, like traction and energy distribution systems, aim to increase power density. Volume, weight and material reduction are gaining the market today. Due to the development of new high power semiconductor devices a n ...

2008

Electrical model of the Alfvén eigenmode exciter on JET

Ambrogio Fasoli, Duccio Testa, Theodoros Panis

The TAE antenna system on JET is used to drive intermediate and high n Alfvén Eigenmodes (AEs) into the plasma so as to study their properties and estimate their stability by measuring their damping rates as a function of the various plasma parameters. In ...

2008

Benchmark Test of a Variable Speed Unit for Teaching Purposes

Jean-Jacques Simond, André Hodder, Sylvain Robert, Basile Kawkabani

Variable speed pump-turbine units have become nowadays an interesting way to increase stability of electrical power networks due to their high level of operating flexibility. Different advantages offered by variable speed pump-turbine units for both pumpin ...

2008

In-Plane Silicon-On-Nothing Nanometer-Scale Resonant Suspended Gate MOSFET for In-IC Integration Perspectives

Mihai Adrian Ionescu, Nicolas Abelé

A 14-MHz in-plane nanoelectromechanical resonator based on a resonant-suspended-gate (RSG) MOSFET principle and integrated in a front-end process is demonstrated. The devices are in-plane flexural vibration mode beams (L = 10 mum, w = 165 nm, and h = 400 n ...

2008

Transient Thermal Model of a Medium Frequency Power Transformer

Alfred Rufer, Irma Villar

2008

Détermination des performances dynamiques du capteur de courant LAX 100-NP de LEM avec Flux2D/3D

The aim of this project is to study the LEM current transducer LAX 100-NP and to determine its dynamic performance using the finite element software Flux2D/3D. Firstly, the secondary impedance of the transducer is simulated, and the results are compared to ...

2008

Improvement of power efficiency of inductive links for implantable devices

Catherine Dehollain, Michel Declercq, Kanber Mithat Silay

This paper presents the analysis of inductive links for remote powering of implantable devices and a method to improve the power link efficiency by modifying the geometrical parameters of planar spiral inductors. The analysis of the inductive links include ...

2008

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