System for supression of underdamped oscillations in ac power dr

Details System for supression of underdamped oscillations in ac power dr System for supression of underdamped oscillations in ac power dr

1983-10-11

1985-01-15

Truhe, J. V.

Electricity: motive power systems

Generator-fed motor systems having generator control

Generator field circuit control

318140, 318154, 318156, 318682, H02P 524

Patent

active

044940505

ABSTRACT:
A method and apparatus for reducing oscillations in input electrical power to a Ward-Leonard drive system which is subject to variations in mechanical loading, the technique utilizing a notch filter in the feedback path to the dc generator, the notch filter being turned to match the resonant frequency of the synchronous motor.

REFERENCES:
patent: 2897427 (1959-07-01), Bradburn
patent: 3108214 (1963-10-01), Wilkerson
patent: 3242407 (1966-03-01), Hansen
patent: 3436633 (1969-04-01), Hemmenway et al.
patent: 3532950 (1970-10-01), Jackson
patent: 3965403 (1976-06-01), Okado
patent: 4031440 (1977-06-01), Christian et al.

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