DEVICE FOR INTER-PHASE CURRENT DISTRIBUTION (OPTIONS) Russian patent published in 2018 - IPC H02M5/14 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used to improve the energy efficiency of single-phase and three-phase consumers by recuperation of consumed energy due to circulation of its part between the consumer and the proposed device of inter-phase current distribution (IPCD). First version of the device for phase-to-phase current distribution contains phase input terminals, a consumer and two single-phase transformers, the winding of each of which contains an intermediate pin and is connected by the first end pin to the free phase input terminal, and the second – to the common phase input terminal connected to the first terminal of the consumer, contains an equalization reactor, the middle and extreme winding leads of which are connected respectively to the second terminal of the consumer and the intermediate terminals of the said transformers. Second version of the device for phase-to-phase current distribution contains the zero and phase input terminals to which the consumer is connected, two single-phase transformers, the winding of each of which contains an intermediate terminal dividing it into unequal parts, half of which are connected to opposite-type phase input terminals, and twice as large – with a common phase input terminal, contains an equalizing reactor, whose middle and extreme winding leads are connected respectively to the zero input terminal and the intermediate terminals of the mentioned transformers. In the first variant, the recovery range is expanded to a value limited only by the structural complication of the IPCD transformers, which is associated with a pronounced inequality in the cross sections of the sections of each phase winding. Further technical result achieved in the second variant of the proposed device is to equalize the values of the consumed phase currents, the inequality of which can be related to the asymmetry of the network voltages. Magnetic cores of IPCD transformers and equalization reactor can have different configurations, including a twisted band-shaped ribbon.

EFFECT: technical result achieved in both versions of the proposed device consists in eliminating unproductive power losses for heating the IPCD windings with parasitic currents.

2 cl, 2 dwg