Excitation system for multi-phase induction generator

Details Excitation system for multi-phase induction generator Excitation system for multi-phase induction generator

H - Electricity

02

P

322/19

H02P 9/00 (2006.01) H02K 17/42 (2006.01) H02P 9/46 (2006.01)

Patent

CA 1082768

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 then described.

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