A topology optimized switchable permanent magnet system

R. Bjørk; A. R. Insinga

doi:10.1016/j.jmmm.2018.05.076

A topology optimized switchable permanent magnet system

R. Bjørk^*, A. R. Insinga

^*Corresponding author for this work

Department of Energy Conversion and Storage

Research output: Contribution to journal › Journal article › Research › peer-review

119 Downloads (Pure)

Abstract

The design of a magnetic field source that can switch from a high field to a low field configuration by rotation by 90°90° of a set of iron pieces is investigated using topology optimization. A Halbach cylinder is considered as the magnetic field source and iron inserts are placed in the air gap of the Halbach cylinder. The ideal shape of these iron inserts is determined as function of the field generated by the Halbach cylinder and as function of the size of the iron segments. The topology optimized structures are parabolic shaped pieces and have a difference in flux density between the high and low positions that is on average 1.29 times higher than optimized regular pole pieces. The maximum increase is a factor of 2.08 times higher than the regular pole pieces.

Original language	English
Journal	Journal of Magnetism and Magnetic Materials
Volume	465
Pages (from-to)	106-113
ISSN	0304-8853
DOIs	https://doi.org/10.1016/j.jmmm.2018.05.076
Publication status	Published - 2018

Keywords

Topology optimization
Halbach cylinder
Magnetic field
Permanent magnet flux sources
Switchable field source

Access to Document

10.1016/j.jmmm.2018.05.076

Topop switchAccepted author manuscript, 3.17 MBLicence: CC BY-NC-ND

OpenUrl availability

Full text

Cite this

@article{6b622d9cb6e3465dafd28944cd971777,

title = "A topology optimized switchable permanent magnet system",

abstract = "The design of a magnetic field source that can switch from a high field to a low field configuration by rotation by 90°90° of a set of iron pieces is investigated using topology optimization. A Halbach cylinder is considered as the magnetic field source and iron inserts are placed in the air gap of the Halbach cylinder. The ideal shape of these iron inserts is determined as function of the field generated by the Halbach cylinder and as function of the size of the iron segments. The topology optimized structures are parabolic shaped pieces and have a difference in flux density between the high and low positions that is on average 1.29 times higher than optimized regular pole pieces. The maximum increase is a factor of 2.08 times higher than the regular pole pieces.",

keywords = "Topology optimization, Halbach cylinder, Magnetic field, Permanent magnet flux sources, Switchable field source",

author = "R. Bj{\o}rk and Insinga, {A. R.}",

year = "2018",

doi = "10.1016/j.jmmm.2018.05.076",

language = "English",

volume = "465",

pages = "106--113",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - A topology optimized switchable permanent magnet system

AU - Bjørk, R.

AU - Insinga, A. R.

PY - 2018

Y1 - 2018

N2 - The design of a magnetic field source that can switch from a high field to a low field configuration by rotation by 90°90° of a set of iron pieces is investigated using topology optimization. A Halbach cylinder is considered as the magnetic field source and iron inserts are placed in the air gap of the Halbach cylinder. The ideal shape of these iron inserts is determined as function of the field generated by the Halbach cylinder and as function of the size of the iron segments. The topology optimized structures are parabolic shaped pieces and have a difference in flux density between the high and low positions that is on average 1.29 times higher than optimized regular pole pieces. The maximum increase is a factor of 2.08 times higher than the regular pole pieces.

AB - The design of a magnetic field source that can switch from a high field to a low field configuration by rotation by 90°90° of a set of iron pieces is investigated using topology optimization. A Halbach cylinder is considered as the magnetic field source and iron inserts are placed in the air gap of the Halbach cylinder. The ideal shape of these iron inserts is determined as function of the field generated by the Halbach cylinder and as function of the size of the iron segments. The topology optimized structures are parabolic shaped pieces and have a difference in flux density between the high and low positions that is on average 1.29 times higher than optimized regular pole pieces. The maximum increase is a factor of 2.08 times higher than the regular pole pieces.

KW - Topology optimization

KW - Halbach cylinder

KW - Magnetic field

KW - Permanent magnet flux sources

KW - Switchable field source

U2 - 10.1016/j.jmmm.2018.05.076

DO - 10.1016/j.jmmm.2018.05.076

M3 - Journal article

SN - 0304-8853

VL - 465

SP - 106

EP - 113

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

A topology optimized switchable permanent magnet system

Abstract

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this