UNIVERSAL TRANSISTOR CONTROLLED REVERSIBLE ELECTRIC DRIVE WITH COMMUTATOR MOTOR Russian patent published in 2019 - IPC H02P1/24 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the electrical equipment. Universal transistor controlled reversible electric drive with commutator motor is intended for use at power supply, both from single-phase AC voltage network, and from DC voltage network for reverse and smooth control of collector motor speed. Each of the four semiconductor arms of the semiconductor bridge is made of two parallel-connected counter-directional bipolar transistors. Emitters of the first and third transistors and collectors of the second and fourth transistors are connected to the first input of the semiconductor bridge. Emitters of the fifth and seventh transistors and collectors of the sixth and eighth transistors are connected to the second input of the semiconductor bridge. Collectors of the first and fifth transistors and emitters of the second and sixth transistors are connected to the third input of the semiconductor bridge. Collectors of the third and seventh transistors and emitters of the fourth and eighth transistors are connected to the fourth input of the semiconductor bridge. Anchor of commutator motor is connected between third and fourth inputs of semiconductor bridge. At supply from single-phase alternating voltage network to the first input of the semiconductor bridge the phase of supply voltage is connected and to the first input of the semiconductor bridge the first input of excitation winding is connected, the second input of which is connected to zero of supply voltage, and when power supply from direct voltage network to first input of semiconductor bridge is connected plus supply voltage and to second input of semiconductor bridge connected first input of excitation winding, second input of which is connected to negative supply voltage.

EFFECT: supply of collector motor supply both from single-phase AC voltage network and from DC voltage network with possibility of reverse by changing polarity of supply voltage at anchor of collector motor.

1 cl, 2 dwg