Patent
Rotor assembly for permanent magnet generator
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In this article, a permanent magnet generator rotor assembly with a sintered cobalt alloy magnet integral with a ferromagnetic hub or shaft is described, where the magnet is separated from the hub by a high temperature material such as aluminum oxide (a ceramic).Abstract:Â
A permanent magnet generator rotor assembly having a sintered cobalt alloy magnet integral with a ferromagnetic hub or shaft. To assure that the magnet develops maximum magnetic energy, the magnet is separated from the ferromagnetic hub or shaft by a high temperature material such as aluminum oxide (a ceramic).read more
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Parallel reactor with internal sensing and method of using same
Howard W. Turner,G. Cameron Dales,Erden Lynn Van,Beek Johannes A. M. Van,Damian Hajduk,Ralph B. Nielsen,Paul Mansky,Leonid Matsiev,Pei Wang,Eric W. McFarland +9 more
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Field means for a dynamoelectric machine, magnet preassembly for use therein
TL;DR: In this paper, a deformable insert is placed between two adjacent magnets and then deformed to enlarge the gap in which it is received, thereby compressing the spring member, and if the magnets are first formed into a preassembly with a shipping band for later assembly with a rotor part, the deformed insert is preferably deformed only to a degree sufficient to hold the preassembly in assembly with only a degree of tightness sufficient to withstand normal handling.
Patent
Permanent magnet stepping motor with single winding
TL;DR: In this article, an electric stepping motor for pulse counting and positioning by angular increments of, for example, 36* was proposed. But the number of pulses was not specified. But it was based on a rotor consisting of a permanent magnet radially magnetized according to a plurality of pole pairs, and an indented body of magnetically soft material with slots and teeth.
Patent
Electric motor utilizing a ferrite stator of low coerciveness, ferrite rotor of high coerciveness, and photo-electric commutation
TL;DR: In this paper, an electric motor with a wound stator and a permanent magnet rotor is combined with optical commutation to provide improved high speed capability and efficiency, long life, and utility in any atmosphere.