Patent ID: 7508107
Filing Date: 2009-03-24
Classification: H02K

Abstract:
1. A rotor for an exciter having a static field and used to energize a field winding of a generator-rotor of a generator, the rotor comprising: at least two first conductor bars aligned substantially parallel to an axis of the rotor and each having two axial ends; a first ring; a second ring; a plurality of collecting rings, wherein the at least two first conductor bars are connected on their first axial ends to one of the collecting rings and on their second axial ends to at least one of the first and second rings; at least one first diode disposed in each first conductor bar, wherein a flow of current in each first conductor bar is allowed only in one direction by the diode such that an alternating current induced in the first conductor bars due to the static field is converted into a direct current in the first and second rings.