Publication

Bi(2223) Ag sheathed tape characterisation under DC applied magnetic field

Bertrand Dutoit, Svetlomir Stavrev, Marten Sjöström
1998
Conference Papers

Abstract

An original electrical AC loss experimental set-up is presented. For loss comparison purpose, Ic and exponent n are measured with a DC magnetic field between 2 and 400 mT applied perpendicularly to the axis of the sample using a specially designed electromagnet. A computer controlled stepper motor allows a the field angle to vary from parallel to perpendicular with respect to the tape surface. Using a triangular input current, voltage is measured and averaged, and then fitted to a power law in the form V0*(I/Ic)^n. The measurements are repeated to give the dependencies of Ic and n on the magnetic field amplitude and angle.

Official source

https://infoscience.epfl.ch/entities/publication/728860ea-c4a0-4ff4-901e-c5471acd2531

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Bertrand Dutoit, Svetlomir Stavrev, Marten Sjöström
1998
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/728860ea-c4a0-4ff4-901e-c5471acd2531

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.

DC motor

A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor. DC motors were the first form of motors widely used, as they could be powered from existing direct-current lighting power distribution systems.

Brushed DC electric motor

A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact. Brushed motors were the first commercially important application of electric power to driving mechanical energy, and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field.

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Bi(2223) Ag sheathed tape characterisation under DC applied magnetic field

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