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Generator stator core vent duct spacer posts

United States Patent

June 24, 2003
View the Complete Patent at the US Patent & Trademark Office
Generator stator cores are constructed by stacking many layers of magnetic laminations. Ventilation ducts may be inserted between these layers by inserting spacers into the core stack. The ventilation ducts allow for the passage of cooling gas through the core during operation. The spacers or spacer posts are positioned between groups of the magnetic laminations to define the ventilation ducts. The spacer posts are secured with longitudinal axes thereof substantially parallel to the core axis. With this structure, core tightness can be assured while maximizing ventilation duct cross section for gas flow and minimizing magnetic loss in the spacers.
Griffith; John Wesley (Schenectady, NY), Tong; Wei (Clifton Park, NY)
General Electric Company (Schenectady, NY)
09/ 421,160
October 19, 1999
This invention was made with Government support under Contract No. DE-FC21-95MC-31176 awarded by the Department of Energy. The Government has certain rights in this invention.