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Apparatus and method for suspending a stator core of an electric generator
   
Document Number
US Patent 7045918
Issued Date
May 16, 2006
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Abstract
An apparatus and method for suspending a stator core (100) in an electric generator upon a foundation (206), where two natural modes of vibration, including known second and third modes, are excited in the core, each mode having four loops and four nodes displaced 45 degrees between the second and third modes. A non-rigid connection (212) connects a yoke to the foundation, and two connection members connect the yoke to the stator core at opposite sides of the non-rigid connection. The two connection points (210a,b) are located at adjacent loops of one of the second and third vibration modes. By this arrangement, radial deflections of the stator core at the respective connection points are transferred into a rocking movement of the yoke around the non-rigid connection. Thereby, vibrations transferred to the foundation are considerably reduced during operation.
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Number of Claims:
6
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Owner
Published
May 16, 2006
Application Number
10/396,400
Filed
March 26, 2003
US Classification
310/51   310/258 310/259
Int'l Classification
H02K   5/24   (20060101)   H02K   5/26   (20060101)  
Examiner
Assistant Examiner
Priority Data
Mar 26, 2002 [SE] 0200929
USPTO Field of Search
310/51   310/89   310/91   310/254   310/258   310/259  
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