METHOD OF GENERATION OF AC VOLTAGES OF TWO DIFFERENT FREQUENCIES IN THREE-PHASE CURRENT TURBO-GENERATOR Russian patent published in 2017 - IPC H02K7/18 H02K7/20 H02K47/24 

FIELD: electricity.

SUBSTANCE: additional set of three-phase windings is introduced into the turbo-generator, one of the windings is located in the common grooves of the stator, and the other - on the additional part of the non-salient pole rotor. The latter through the contact rings and brushes is connected to an adjustable reversible frequency converter, which provides an asynchronous mode with a negative slip frequency in the turbo-generator. In order to exclude the mutual electromagnetic influence of the main and additional three-phase windings located both in the stator grooves and on both parts of the rotor, their numbers of pairs of poles are selected under the condition p₁>p₂. Generation in an additional winding of the electrical power of three-phase current of industrial frequency (50 Hz) at a turbo-generator's rotation frequency n₁=6000 rpm simultaneously with generation of three-phase current of increased frequency (200 Hz) in the main winding of the stator of the turbo-generator.

EFFECT: generation of voltages of two different frequencies.

2 cl, 1 dwg