Means for damping mechanical torsional oscillations of an electr

Details Means for damping mechanical torsional oscillations of an electr Means for damping mechanical torsional oscillations of an electr

1980-05-27

1983-03-22

Hickey, R. J.

Electricity: single generator systems

Automatic control of generator or driving means

Speed or frequency of generator

322 58, 361 20, 363 35, H02J 336, H02H 706, H02P 900

Patent

active

043777805

ABSTRACT:
For damping torsional oscillations of an electric a.c. generator, a speed-sensing member, for example a tachometer-generator, is connected to the a.c. generator. The speed-dependent signal generated by the speed-sensing member is supplied to a band-pass filter which is adapted to the natural frequency of the torsional oscillations. The output signal of the band pass filter is supplied directly to the control angle determining means of a converter connected to the generator. In this way, the power of the converter is modulated in such a way that the oscillations are damped.

REFERENCES:
patent: 3551778 (1970-12-01), Ekstrom
patent: 3614585 (1971-10-01), Wedin
patent: 3689823 (1972-09-01), Uhlmann
patent: 3999115 (1976-12-01), South et al.
patent: 4329637 (1982-05-01), Kotake et al.

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