Annular stator core construction
US4812695A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/522
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A generator exciter for an A.C. sychronous alternator has a rotor secured to the alternator shaft and a compact high power stator. The stator core is a square laminated core. Eight straight sided poles terminate in a concave end defining a circular rotor opening. A first set of four poles is circumferentially spaced to the diametrical four sides of the core. The poles are a minimum length, and of a width approximately equal to twice the depth of the outer square side portions. A second set of four poles are located at the four corners of the core. The second poles are the same width as the first poles but are significantly longer. Each square corner portion significantly enlarges the outer connecting portion and includes a core mounting opening. Precision prewound coils of the same width and of a length slightly less than the pole length are placed on each pole. A generally stepped construction with a slight enlargement between adjacent poles defines recesses of the width of the coils. The opposed side walls of the poles having a notch adjacent the outer ends. Locking wedges interposed between the poles having locking edges in the opposed notches and curve inwardly into clamping en…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.