Finite Element Method Magnetics : HalbachExample

Modified Halbach Arrays

José Borges de Almeida
Universidade do Minho
Physics Department
josebda@gmail.com

Description

This Octave script models an infinite double layer of modified magnet arrays to produce a very strong trapezoidal field in the inter-magnet space. There are a number of user definable parameters and true Halbach arrays can be obtained by setting interMagnet = 0. Halbach arrays are unstable and the magnets must be bound to backing plates in order to stay in place; in this model the backing plates are made of 1 mm thick steel but they could be made of non ferromagnetic material in the case of true Halbach arrays.


Fig. 1 One module of the infinite Halbach array.


Fig. 2 Normal flux density plot.

Valid XHTML :: Valid CSS: :: Powered by WikkaWiki