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Magnetoelectric turbo-generators with direct drive from a turbine which rotor speed reaches several hundreds thousands rpm are widely used in microturbine power plants. Due to the action of centrifugal forces, the permanent magnets of the rotors endure considerable mechanical stresses. In most cases, brittle rare-earth permanent magnets are used in microturbines. To ensure the mechanical stress of...
Currently, one of the directions of electromechanical systems progress is the development of on the base of electric machines with ultra-high rotational speed (100000 and more rpm). The operating parts of these aggregates are turbine and/or compressor impellers, located on the same shaft (ie, without mechanical gear) with the inductor of the electric machine, so that these devices can be called “electrical...
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