REGULATOR OF THREE-PHASE VOLTAGE Russian patent published in 2008 - IPC H02M5/257 

FIELD: electricity.

SUBSTANCE: invention is related to the sphere of semiconducting transducer equipment and may be used for regulation or stabilization of alternating current voltage of alternating current on active-inductive load with determined power surge on the load at its uneven drop. Technical result is reduction of dimensions and mass. Regulator of three-phase voltage consists of sequentially connected three-phase input switch in the form of antiparallel coupling of two semi-conducting elements in every phase, three-phase LC-filter and switched three=phase active-inductive load, and also contains parallel connected to the load limiting circuit of switching surges, which includes three-phase diode bridge, polar damping condenser and output switch, which is made in the form of threshold device, which includes power transistor, base and collector resistors and threshold element. Diode bridge in its three inputs is connected to the corresponding load inputs. The first input of diode bridge is connected to collector resistor of power transistor, positive coating of damping condenser and one of the outputs of threshold element, the other output of which is connected to the base of power transistor. The second output of diode bridge is connected to the negative coating of damping condenser, emitter of power transistor and base resistor.

EFFECT: reduction of dimensions and mass of three-phase voltage regulator.