Metallic wedge block with integrated insulated end caps to prevent electrical arcing in dynamoelectric generators

Abstract

A metallic wedge block with integrated end cap insulation serves as a coil winding retention system for large dynamoelectric machines with axially extending radial slots containing windings. This invention mitigates electrical arc strikes and localized heating by addressing deficiencies in traditional wedge designs using advanced insulation materials. It minimizes pitting, enhances thermal management, and extends the generator's operational lifespan. The design ensures compatibility with existing systems, enabling retrofitting without significant modifications. Metallic wedge blocks are arranged end-to-end to restrain windings and electrically insulate adjacent wedges via integrated end cap insulation. This insulation prevents arc strikes during negative sequence events and reduces thermal load by eliminating localized heating. The resulting assembly eliminates pitting and improves efficiency by addressing thermal loads caused by electrical discharges.

Dependencies are inferred from the claim text.