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Design of a linear ...
Design of a linear Halbach magnetic damper
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- Parekh, Mrunal, 1987- (author)
- KTH,Elektroteknisk teori och konstruktion
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Bissal, Ara (author)
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- Magnusson, Jesper, 1984- (author)
- KTH,Elektroteknisk teori och konstruktion,ABB AB Corporate Research, Västerås 722 26, Sweden
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- Engdahl, Göran (author)
- KTH,Elektroteknisk teori och konstruktion
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(creator_code:org_t)
- IOS Press, 2018
- 2018
- English.
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In: International journal of applied electromagnetics and mechanics. - : IOS Press. - 1383-5416 .- 1875-8800. ; 59:2, s. 1-9
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- Ultra-fast circuit breakers are operated with fast electromagnetic actuators. They can generate a sufficient impulse force to swiftly open electrical contacts in a couple of milliseconds. Opening of the contacts with high velocities implies a need for a timely and controllable damping. An efficient damping mechanism then is crucial to attain an appropriate actuation performance and secure a long lifetime. In this paper a finite element model of a Halbach magnet array based magnetic damper and a corresponding experimental prototype is described. A parametric study is performed to understand the effect of load mass and incoming velocities. It was found that the magnetic field modulation plays an important role on the damping performance. A uniform and high radial component of the magnetic flux density is necessary in order to achieve high damping force. The radial magnetic field can be controlled via thickness and magnetization direction of the ring magnets that are used to create the Halbach magnet array.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Halbach magnet array
- magnetic damper
- permanent magnet
- FEM (finite element method)
- circuit breaker
- radial component of magnetic flux density
- Electrical Engineering
- Elektro- och systemteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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