Systems and methods for providing fluid for internal cooling and lubrication of electric machines
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United States of America Patent
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Apr 30, 2013
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N/A
app pub date -
Apr 6, 2011
filing date -
Aug 25, 2010
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Abstract
The invention provides systems and methods for cooling and lubrication of high power density electric machines with an enhanced fluid injection system. Multiple fluid flow passages may be provided within the electric machine, which may include one or more bearing fluid flow pathways and one or more rotor fluid flow pathways. The bearing fluid flow pathway may comprise one or more passages which may direct a fluid to contact one or more bearings. The rotor fluid flow pathway may comprise one or more passages which may direct a fluid along the rotatable shaft toward the rotor and stator. A method for cooling and lubricating the electric machine may include directing a fluid to flow through a bearing fluid flow pathway for lubrication and cooling of one or more bearings, and then sequentially flow through a rotor fluid flow pathway for cooling of the rotor and stator.
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