FLYWHEEL STRUCTURE OF ENERGY STORAGE APPARATUS
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United States of America Patent
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Issued Date -
Apr 29, 2010
app pub date -
Sep 25, 2009
filing date -
Oct 28, 2008
priority date (Note) -
Abandoned
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Abstract
Provided is a flywheel structure of an apparatus for storing energy (particularly electric power), and more particularly, to a flywheel structure of an energy storage apparatus, which allows stable operation since upper and lower thrust collars are installed on an upper and lower faces of a rotor or a hub of the flywheel, respectively and the system thus can be balanced after assembly is completed in a state that all parts including the thrust collars are assembled and which can control vibration effectively since axial displacement is controlled at upper and lower sides of the center of gravity. To this end, the present invention provides a flywheel structure of an energy storage apparatus comprising a central shaft connected to a bearing for restricting a radial direction and an electric motor, a rotor of a high strength for storing rotational energy, a hub for connecting the central shaft and the rotor, and a thrust collar mounted on the central shaft, wherein upper and lower thrust collars are installed on upper and lower face of the rotor or the hub, respectively.
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