منابع مشابه
Magnetic Field Fluctuations in Sc Dipole Magnet
Magnetic field fluctuations at the betatron frequency can lead to emittance growth in circular accelerators. Tolerances are extremely tight for large hadron colliders like LHC and VLHC[1]. We performed experimental studies of the fluctuations in a stand-alone superconducting Tevatron magnet. Here we give a general description of the experimental set-up, present main results and discuss conseque...
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For low-field NMR, NdFeB permanent magnet arrangements are proposed to provide the static polarizing magnetic field. Especially a parallel and a circular arrangement of the permanent magnets, iron yokes and small shim magnets were tested and improved by COMSOL. The intent was to guide the design and the construction of NMR magnets by calculating the magnetic field strength and the associated fi...
متن کاملMagnetic Field Measurement of the Air Slot Dipole Magnet
Field measurement results of the air slot type dipole magnet are presented. The vacant portion, called the air slot, located in the iron core controls the flow of the magnetic flux and improves uniformity of the magnetic field. This magnet realizes a better magnetic field distribution over a wide range of field strengths. The prototype of the magnet had been fabricated and tested to verify the ...
متن کاملModeling of a Field-Modulated Permanent-Magnet Machine
Abstract: In this work, an effective field-modulated permanent-magnet (FMPM) machine was investigated, in which the spoke-magnet outer rotor and open-slot stator were employed. The objective of this paper is to provide the mathematical modeling analysis that was performed for the purpose of control research on this type of FMPM machine. The simulation results by means of finite element analysis...
متن کاملAnalytical Modeling of Magnetic Field Distribution in Inner Rotor Brushless Magnet Segmented Surface Inset Permanent Magnet Machines
Brushless permanent magnet surface inset machines are interested in industrial applications due to their high efficiency and power density. Magnet segmentation is a common technique in order to mitigate cogging torque and electromagnetic torque components in these machines. An accurate computation of magnetic vector potential is necessary in order to compute cogging torque, electromagnetic torq...
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ژورنال
عنوان ژورنال: IEEE Transactions on Magnetics
سال: 1994
ISSN: 0018-9464,1941-0069
DOI: 10.1109/20.305731