Study induced in moving coil current through an electromagnet. Analysis joule heat losses

Abstract

The idea of this work derives from the publication that John N. Fox and Daniel G. Reiber, made in 1972, whose main objective was to compare the loss of kinetic energy in a coil system with heat loss by the induced currents in the coil: both loss effects happened the time which the coil pass between the magnetized zone between the poles of a powerful electromagnet.

To check these effects consequence one from each other, the coil is placed on a slider cart resting on an air track. This slider cart-coil system moves air over the air track with negligible friction: for minimizing possible friction compressor sends air at very high pressure and slightly lifts the slider-coil system on the track, so that it travels on a very thin air bed, without touching the track.

The body of this article shows that what they could not Reiber and Fox do (for not having four photocells ultrasensitive equipment, a new generation oscilloscope, Tektronik, and Mathematica 7.0 software, in difference of our group) it could does now, providing us these tools, it was key of all in a substantial decrease of the error. The error reduction by 13% (before article) to 2% (our work) allowed us to study the same phenomenon subsequently replacing the coil with a metal plate to analyze eddy currents in the plate, similar to those induced currents in the coil. This future work may be very important for the Industry.

DOI: http://dx.doi.org/10.5377/rct.v0i13.1718

Revista Ciencia y Tecnología, No. 13, diciembre 2013: 124-136