Pumping-up generator/motor system and method of operation of the

Details Pumping-up generator/motor system and method of operation of the Pumping-up generator/motor system and method of operation of the

1986-04-16

1988-05-10

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Braking

307 87, 318827, 417 44, 417 45, H02P 742

Patent

active

047438266

ABSTRACT:
In a pumping-up generator/motor system comprising an induction generator/motor, at least one cyclo-converter connected to the secondary winding of the induction generator motor for controlling the rotational speed of the generator/motor in the motor mode and for maintaining the output frequency thereof in the generator mode at a constant level, the center of the speed range of the generator/motor in the generator mode is set near the synchronous speed thereof and a plurality of converter units constituting each cyclo-converter are connected in parallel in the generator mode, and in series in the motor mode thereby allowing the capacity of the cyclo-converter to be made smaller.

REFERENCES:
patent: 4009431 (1977-02-01), Johnson
patent: 4481455 (1984-11-01), Sugimoto et al.
Murphy, J. M. D., Thyristor Control of A.C. Motors, Pergamon Press, 1973, pp. 134-135.

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