Induction generator excitation system

Details Induction generator excitation system Induction generator excitation system

1975-09-15

1977-02-01

Hickey, Robert J.

Electricity: single generator systems

Generator control

Induction generator

322 28, 322 94, H02P 900

Patent

active

040063992

ABSTRACT:
A background discussion of induction machine equivalent circuits, including operation as an induction generator, is provided. Selective shorting of the machine terminals is described, to convert at least some of the mechanical input energy into electrical field energy for the machine. Systems are described for accomplishing the selective shorting with a single-phase machine, including sensing of the zero-crossing of the output voltage to insure that the shorting is effected at the appropriate time to replenish the field. The shorting time duration can be varied as a function of load. A three-phase shorting circuit is also described.

REFERENCES:
patent: 2611122 (1952-09-01), Valentin
patent: 3829758 (1974-08-01), Studtmann

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