Publication

Modelling the magnetic field effects in a high-Tc superconducting transformer

Bertrand Dutoit, Svetlomir Stavrev
2003
Conference Papers

Abstract

This paper describes quantitatively the magnetic field inside the windings of a HTS transformer. The results are obtained by means of finite element method simulations, using the electromagnetic software package Flux2D. The transformer design has been made by ŠKODA in the European project BIG-POWA. The ratings of the transformer are U1 = 400 V, I1 = 47 A, U2 = 133 V, I2 = 140 A (rms values). The magnetic field in the superconducting windings has been calculated in the steady state regime at 50 Hz. It is non-uniformly distributed along the width of the windings and reaches a magnitude of 80-100 mT. It is shown that the field near the end of the windings can be reduced by using ferromagnetic rings, placed in the lower and upper part of the transformer. The effect of the magnetic field on the critical current density in the Bi-2223/Ag tapes, with which the windings are made of, has been evaluated.

Official source

https://infoscience.epfl.ch/entities/publication/b849c413-d60c-4385-9cfa-c39016b2c832

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Bertrand Dutoit, Svetlomir Stavrev
2003
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b849c413-d60c-4385-9cfa-c39016b2c832

About this result

Related concepts (32)

Magnetic field

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field. A permanent magnet's magnetic field pulls on ferromagnetic materials such as iron, and attracts or repels other magnets.

Electromagnetic field

An electromagnetic field (also EM field or EMF) is a classical (i.e. non-quantum) field produced by moving electric charges. It is the field described by classical electrodynamics (a classical field theory) and is the classical counterpart to the quantized electromagnetic field tensor in quantum electrodynamics (a quantum field theory). The electromagnetic field propagates at the speed of light (in fact, this field can be identified as light) and interacts with charges and currents.

Earth's magnetic field

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.

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Modelling the magnetic field effects in a high-Tc superconducting transformer

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