Patent · US Expired

Brushless synchronous machine

US5783891A · kind A · utility

9Cited by

13References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Auinger · Nuremberg, DE
Jürgen Bredthauer · Berlin, DE
Bernhard Wachta · Berlin, DE

Key dates

Filing date	Oct 23, 1995
Grant date	Jul 21, 1998
Priority date	—
Expiry date	Oct 23, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH02K19/28
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A brushless synchronous machine, for example a synchronous generator, having an exciter, whose field excitation winding is powered via a regulator connected to a separate auxiliary winding in the stator of the main machine in which the auxiliary winding has a number of phases that differs from the harmonic number of the harmonic wave that is the strongest in the event of a short circuit. In the case of a strong third harmonic wave, the auxiliary winding has a four- or five-phase design.

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