Winding restraint on wound rotor generators or motors and method for forming the same
US6794773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Aug 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/487
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric machine and method for forming the same comprises a rotor, a rotor winding disposed on the rotor and having a body portion and end turn portions, and a non-metallic cylinder arranged around the rotor to restrain both the body portion and the end turn portions of the winding against forces resulting from a rotation of the rotor. No portion of an inner circumference of the cylinder is smaller than an outer circumference of the rotor so that the cylinder may be slid around the rotor without obstruction during construction of the electric machine. The cylinder surrounds a body portion of the rotor and extends axially beyond end faces of the rotor and has a plurality of holes defined therethrough. The rotor includes a plurality of venting passages and at least one opening formed therein to allow a balance plug to be engaged therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.