Patent · US Expired

Rotating rectifying device for the excitation of a synchronous machine

US4670678A · kind A · utility

8Cited by

6References

12Claims

0Family size

Assignee

Brown, Boveri & Cie AG · DE

Inventors

Kurt Jager
Philipp Rosch · Viernheim, DE
Rolf Fischl · Hemsbach, DE
Heinrich Wambsganss · Mannheim, DE

Key dates

Filing date	Aug 29, 1985
Grant date	Jun 2, 1987
Priority date	—
Expiry date	Aug 29, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/01082
WIPO fieldSemiconductors
WIPO sectorElectrical engineering

Abstract

Rotating rectifying device for excitation of a synchronous machine. The device includes an armature mounted on the machine shaft in a magnetic field with rotating coils connected to rectifier assemblies mounted on the inside flange surface of a support wheel, also mounted on the machine shaft. Each rectifier assembly has a first cooling body mounted on the inside flange surface, and a second cooling body that is resiliently spring biased with an outwardly facing surface against a disc-shaped semiconductor rectifier that rests with its other surface against the first cooling body. The second cooling body has parallel ribs that project into the circular space formed by the support wheel flange. In one version of the invention the second cooling body and the spring element is of circular construction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.