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US 12,744,437 B2Granted
Refurbishing wind turbine generator stator winding with winding conversions
AssigneeTimken Gears & Services Inc.
InventorsJan H. de Swardt, Randall W. Russell
Life of this patent
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Abstract
Stators for use in electric machines and methods for refurbishing the same. One method for refurbishing a stator for use in an electric machine includes at least partially disassembling the stator to provide access to a plurality of stator windings connected in a four-circuit star connection having three turns per coil, and reconfiguring the stator such that the plurality of stator windings are connected in a four-circuit delta connection having five turns per coil.
Claims5
A method for refurbishing a stator for use in an electric machine, the method comprising:
- at least partially disassembling the stator to provide access to a plurality of stator windings connected in a four-circuit star connection having three turns per coil, wherein the plurality of stator windings are supported by a plurality of slots,
- adding a three-layer composite slot liner to the plurality of slots, wherein the three-layer composite slot liner is an aramid paper, polyimide film, and aramid paper composite insulation,
- reconfiguring the stator such that the plurality of stator windings are connected in a four-circuit delta connection having five turns per coil, and
- insulating the reconfigured plurality of stator windings with quad film insulation.
1 more element
Dependencies are inferred from the claim text.