Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes

Dan Eriksen; Christian R.H. Bahl; Anders Smith; Nini Pryds

doi:10.1109/TMAG.2012.2226907

Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes

Dan Eriksen, Christian R.H. Bahl, Anders Smith, Nini Pryds

Department of Energy Conversion and Storage

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

Abstract

The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.

Original language	English
Journal	I E E E Transactions on Magnetics
Volume	49
Issue number	3
Pages (from-to)	1159-1162
ISSN	0018-9464
DOIs	https://doi.org/10.1109/TMAG.2012.2226907
Publication status	Published - 2013

Keywords

Magnetic forces
Magnetic materials
Permanent magnet (PM) machines

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10.1109/TMAG.2012.2226907

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title = "Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes",

abstract = "The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.",

keywords = "Magnetic forces, Magnetic materials, Permanent magnet (PM) machines",

author = "Dan Eriksen and Bahl, {Christian R.H.} and Anders Smith and Nini Pryds",

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AU - Eriksen, Dan

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AU - Smith, Anders

AU - Pryds, Nini

PY - 2013

Y1 - 2013

N2 - The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.

AB - The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.

KW - Magnetic forces

KW - Magnetic materials

KW - Permanent magnet (PM) machines

U2 - 10.1109/TMAG.2012.2226907

DO - 10.1109/TMAG.2012.2226907

M3 - Journal article

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EP - 1162

JO - I E E E Transactions on Magnetics

JF - I E E E Transactions on Magnetics

IS - 3

ER -

Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes

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