Electric generators, rotor slot wedges for retaining field coils in slots in rotors of electric generators, and methods of repairing and/or maintaining electric generators and components thereof
US10819196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2018 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Nov 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor assembly for an electric generator, comprising a rotor element, conductive rotor windings and a plurality of rotor slot wedges. The rotor element comprises rotor teeth and rotor slots. At least a first rotor slot wedge is in a first rotor slot and has a shape that encompasses a rectangular prismatic shape and first and second protrusions. At least a first edge on an end surface of at least a first rotor slot wedge has a degree of smoothness as specified herein, and/or is radiused (as defined herein). Also, methods of refurbishing an electric generator, comprising radiusing at least a portion of at least one edge of a wedge. Also, removing a wedge from rotor element, radiusing at least one edge of the wedge, and inserting the wedge into a rotor element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.