Magnetic field mitigation by means of passive loop: technical optimization

Abstract

Purpose

The purpose of this paper is to present an approach to design passive loop systems in order to reach good performances.

Design/methodology/approach

The optimization has been performed by means of the MATLAB optimization toolbox “Gatool” which solves the optimization problems with a genetic algorithm.

Findings

Several configurations have been analyzed by varying the number of loops from 2 to 15, whose geometry has been chosen by the genetic algorithm. Considering a five loops configuration, along the reference path it is possible to obtain a shielding factor almost constant and equal to 3.5.

Originality/value

The optimized configurations have been compared with a practical employed layout composed of 17 closed loops placed above and around the junction zone. The shielding factors obtained by the six loops configuration are comparable with the ones of the practical layout.

Citation

Canova, A., Fabio, F., Giaccone, L., Guerrisi, A. and Repetto, M. (2012), "Magnetic field mitigation by means of passive loop: technical optimization", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 31 No. 3, pp. 870-880. https://doi.org/10.1108/03321641211209762