Variable speed pumping-up generator

Details Variable speed pumping-up generator Variable speed pumping-up generator

1994-12-20

1996-10-01

Ip, Paul

Electricity: motive power systems

Induction motor systems

Primary circuit control

318723, 318798, 318806, 290 40C, 290 43, H02K 718, H02P 904

Patent

active

055613586

ABSTRACT:
A variable speed pumping up generator includes a first speed control unit for outputting a rotating speed command signal for controlling a pump turbine in accordance with a power output command and outputting an excitation control signal to an AC excitation unit of the generator, and a second speed control unit for controlling, in a generation mode, an amount of AC excitation from an AC excitation unit when a rotating speed of a rotary shaft departs from a lower limit setting or an upper limit setting. The setting is set in accordance with the rotating speed generated during a normal operation.

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