ASYNCHRONOUS ELECTRIC DRIVE WITH PHASE-WOUND ROTOR Russian patent published in 2011 - IPC H02P27/05 

FIELD: electricity.

SUBSTANCE: asynchronous electric drive with phase-wound rotor, which contains asynchronous electric motor with phase-wound rotor, thyristor commutator in stator circuit; to the first control input of thyristor commutator there connected is current control output, and to the second control input there connected is output of rotor position sensor, which is mechanically connected to shaft of asynchronous motor; at that, the first control input of current control is connected to source if driving voltage proportional to the desired current of stator, and the second one is connected to current sensor output. According to this invention, parallel to stator windings there connected are three bidirectional thyristors. Depending on the signal received from rotor position sensor of asynchronous electric motor, control pulses are supplied to two thyristors of two stator phases of asynchronous motor, the phase zone of which is crossed with magnetic axis of rotor winding, and the third stator winding is short-circuited with bidirectional thyristor.

EFFECT: reducing the degree of oscillation of electric drive.

3 dwg