Synchronous machine having control coils for compensating mechanical oscillations of the rotor

摘要

PCT No. PCT/EP90/01987 Sec. 371 Date Jun. 10, 1992 Sec. 102(e) Date Jun. 10, 1992 PCT Filed Nov. 20, 1990 PCT Pub. No. WO91/10278 PCT Pub. Date Jul. 11, 1991.In order to compensate for the effects of mechanical oscillations of the salient pole rotor in a synchronous machine in a simple manner, control coils are provided which generate a controllable quadrature-axis magnetic field. The control coils are arranged on the salient pole rotor in such a way that the quadrature-axis magnetic field generated by the control coils is superimposed in the air gap on the controllable direct-axis magnetic field generated by exciting coils enclosing each pole body of the salient pole rotor.