ADJUSTABLE TRANSFORMER WITH ROTATING FIELD Russian patent published in 2008 - IPC H01F38/18 H01F29/14 

FIELD: electrical engineering.

SUBSTANCE: transformer comprises primary yoke that is external laminated hollow cylinder with grated slots on inner surface designed for polyphase primary winding, secondary yoke that is inner laminated cylinder with grated slots on external surface designed for polyphase secondary winding, magnetic shunt - intermediate hollow cylinder with grated slots on external and inner surface designed for three field windings. Primary transformer windings are connected to load phase A, B, C respectively. Rectifiers are supplied with secondary transformer windings and provider power supply corresponding field windings. Regulating rheostats are designed for output voltage alignment. Magnetic conductance of shunt is adjusted in its field windings. Current magnitude is controlled with automatic regulator consisting of current transformer and rectifiers and varying supply voltage of field windings proportionally to varying load current. Variations of current in field windings makes it possible to change magnetic flow interconnected with winds of secondary winding, and then output voltage.

EFFECT: improved reliability of output voltage stabilization circuit.

2 dwg