permanent magnet


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permanent magnet

An MRI term for a magnet design that uses blocks of ferromagnetic materials (permanent magnets) to generate a magnetic field between the magnet’s poles.

Pros
No need for extra electrical power or cooling, reduced fringe field effect and no missile effect due to iron composition of magnet.

Cons
Weight considerations limit permanent magnets to maximum field strengths of 0.3T or less.
References in periodicals archive ?
Plates, grates and traps are simply rare earth permanent magnets arranged in a circuit and contained in a stainless steel enclosure.
upsurge in demand of permanent magnet motors in industrial and agricultural sectors, which drives the global permanent magnet motor market.
The permanent magnet tunnel thruster design concept comprises a permanent magnet motor in a rim, which drives the propeller in the centre.
Mathematical model of interior permanent magnet synchronous motors in the a-P stationary system describes equations (1).
A synchronous generator may be excited by traditional current-carrying field winding or by permanent magnet system of high energy.
Permanent magnets are usually magnetized in a fixture comprising an electromagnet driven by a capacitor discharge circuit, iron former and the un-magnetized material.
These new orders strengthen our commercial base as a leading designer and manufacturer of high-performance, lightweight, permanent magnet electric motors and drives.
5 Impact of Export Restrictions on Development of Permanent Magnet Generator Technology
By eliminating gearbox maintenance and most importantly, failure, all of our nearly 100 permanent magnet solutions provide increased up-time with 75% less upkeep and repair.
com/research/n46vhr/research_and) has announced the addition of the "Research and Development Trend Forecast of China Permanent Magnet Industry, 2013-2017" report to their offering.
A second pre-conference seminar will examine "Application of finite element analysis to permanent magnet devices.

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