Results 161 to 170 of about 1,109 (210)

Design of a Halbach Magnet Array Based on Optimization Techniques

IEEE Transactions on Magnetics, 2008
We have designed a Halbach magnet array by using a numerical optimization method based on finite-element analysis. The magnetization direction of each element is defined as the design variable. The optimal magnet arrays composed of two and three linear magnet layers can then be investigated to increase the attractive, repulsive, and tangential magnetic
Jeonghoon Yoo
exaly   +2 more sources

A passive shimming method for Halbach magnet based on magnetic sheet arrays

Journal of Magnetic Resonance, 2022
Halbach magnet has great potential in nuclear magnetic resonance device, where the field homogeneity requirement puts heavy demands on high efficiencypassive shimming (PS) technique. Conventional PS involves a tedious iteration process of the magnetic block/sheet number and positions optimization. In this paper, we propose a PS method based on magnetic
Ya, Wang, Yajie, Xu, Feng, Wang, Junhao, Zhang, Bowen, Peng, Peng, Yu, Yingcong, Yu, Xiaodong, Yang   +7 more
openaire   +2 more sources

A concept for a magnetic particle imaging scanner with Halbach arrays

Physics in Medicine & Biology, 2020
Magnetic particle imaging (MPI) is a new medical imaging technique visualizing the concentration distribution of superparamagnetic nanoparticles used as tracer material. MPI is not yet in clinical routine, since one of the challenges is the upscaling of scanners.
A C Bakenecker, J Schumacher, P Blümler, K Gräfe, M Ahlborg, T M Buzug   +5 more
openaire   +2 more sources

A Halbach array magnetic spring

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005., 2005
This paper summarises a research on a large load bearing magnetic spring concept, which has application to the development of a non-contact vibration isolation table. Also, the paper outlines the design of a magnetic spring with a single degree of instability that is suitable for bearing large loads.
W. Robertson, B.S. Cazzolato, A.C. Zander   +2 more
openaire   +1 more source

Modelling and Analysis of the Halbach Array Magnets

2019 11th International Symposium on Advanced Topics in Electrical Engineering (ATEE), 2019
The objective of this paper is the implementation through numerical modelling of Halbach permanent magnets for the determination of the optimum magnetization directions in order to obtain a uniform magnetic field around the set of Halbach permanent magnets. For this study the magnetic induction distribution, magnetic field intensity and current density
Claudia Pacurar, Vasile Topa, Adina Giurgiuman, Calin Munteanu, Claudia Constantinescu, Sergiu Andreica, Marian Gliga   +6 more
openaire   +1 more source

Octagonal Halbach Magnet Array Design for a Magnetic Refrigerator

Heat Transfer Engineering, 2017
An effective magnet array design for magnetic refrigeration systems is crucial given the space limitations and need for maintaining the required cooling capacity. Here, Halbach permanent magnet arrays (HPMA) in an octagonal orientation are studied using NdFeB permanent magnets.
Serdar Celik, Mehmet Hamdi Kural
openaire   +1 more source

Performance of Halbach magnet arrays with finite coercivity

Journal of Magnetism and Magnetic Materials, 2016
Abstract A numerical method to study the effect of finite coercivity on the Halbach cylinder geometry is presented. Despite the fact that the analytical solution available for this geometry does not set any limit to the maximum air gap flux density achievable, in real life the non-linear response of the magnetic material and the fact that the ...
A.R. Insinga, C.R.H. Bahl, R. Bjørk, A. Smith   +3 more
openaire   +1 more source

A New Traveling Magnetic Electromagnetic Halbach Array for PMSLM

2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), 2021
In this paper, an coreless permanent-magnet synchronous linear motor (PMSLM) with novel coil topology named traveling magnetic electromagnetic Halbach array (TMEHA) is proposed. Firstly, the topological structure and principle of the TMEHA-PMSLM is introduced.
Wei Qin, Ma Yuhua, Zhao Jiding, Wang Fuyao, Song Chengrui, Zhang Jielong   +5 more
openaire   +1 more source

A new magnetic bearing using Halbach magnet arrays for a magnetic levitation stage

Review of Scientific Instruments, 2009
Next-generation lithography requires a high precision stage, which is compatible with a high vacuum condition. A magnetic levitation stage with six degrees-of-freedom is considered state-of-the-art technology for a high vacuum condition. The noncontact characteristic of magnetic levitation enables high precision positioning as well as no particle ...
Choi, YM Choi, Young-Man, Lee, MG Lee, Moon G., Gweon, DG Gweon, Dae-Gab, Jeong, J Jeong, Jaehwa   +3 more
openaire   +3 more sources