Synchronmaschine mit Oberwellen-Dämpfungsfunktion

摘要

To provide a synchronous machine which effectively absorbs higher harmonics in an AC system to which the synchronous machine is linked. The synchronous machine is comprised of damper winding, disposed on each magnetic pole and constituting by itself an independent closed circuit; capacitors, each of which is connected in parallel with each of damper winding divisions obtained by dividing the damper winding at every predetermined winding turns; a DC reactor for blocking flowing-in of higher harmonics to a DC power supply for DC excitation; a series resonant circuit further comprised of the damper winding and the capacitors; and a series resonant circuit further comprised of field winding and a capacitor, in which resonant frequencies of both series resonant circuits are set at 6nf (n: an integer, f: a fundamental frequency) so as to greatly reduce impedance of the damper winding and the field circuit seen from an armature of the synchronous machine, by which to extinguish or reduce higher harmonics (6n +/- 1)f of the AC system.