The magnetic properties of the hollow cylindrical ideal remanence magnet

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:416

Article

Bjork, R.¹ 

[1] Tech Univ Denmark DTU, Dept Energy Convers & Storage, Frederiksborgvej 399, DK-4000 Roskilde, Denmark

关键词: Ideal remanence magnet;    Halbach cylinder;    Magnetic field;    Permanent magnet flux sources;    Magnetic efficiency;   

DOI  :  10.1016/j.jmmm.2016.05.034

来源: Elsevier

【 摘 要 】

We consider the magnetic properties of the hollow cylindrical ideal remanence magnet. This magnet is the cylindrical permanent magnet that generates a uniform field in the cylinder bore, using the least amount of magnetic energy to do so. The remanence distribution of this magnet is derived and the generated field is compared to that of a Halbach cylinder of equal dimensions. The ideal remanence magnet is shown in most cases to generate a significantly lower field than the equivalent Halbach cylinder, although the field is generated with higher efficiency. The most efficient Halbach cylinder is shown to generate a field exactly twice as large as the equivalent ideal remanence magnet. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free