Variable speed pumping-up electrical power system

Details Variable speed pumping-up electrical power system Variable speed pumping-up electrical power system

1987-04-29

1988-05-10

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318806, H02P 540

Patent

active

047438274

ABSTRACT:
Disclosed in a variable speed pumping-up electrical power system comprising a variable speed generator/motor, a frequency converter connected between the generator/motor and an a.c. power system, a controller controlling an effective power input to the generator/motor by controlling the frequency converter on the basis of the difference between an actual effective power input from the a.c. power system and an externally-applied effective power command, and a correction circuit correcting the effective power command on the basis of the difference between the frequency of the a.c. power system and a frequency setting.

REFERENCES:
patent: 4158163 (1979-06-01), Eriksen et al.
patent: 4200833 (1980-04-01), Wilkerson
patent: 4276505 (1981-06-01), Bose
"Recent Control System for Hydro-Power Plant", Hitachi Review, vol. 28 (1979), No. 4, pp. 193-198.

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