RECTIFIER-INVERTER CONVERTER OF ELECTRIC STOCK AND METHOD OF ITS CONTROL IN REGENERATIVE BRAKING MODE Russian patent published in 2020 - IPC B60L9/12 B60L7/12 H02P7/292 H02M7/162 

FIELD: transportation.

SUBSTANCE: group of inventions relates to electrical traction systems of vehicles. Method of controlling a rectifier-inverter converter of an electric rolling stock consists in shunting the circuit of the rectified current of the electric drive with a discharge arm. Bypassing the rectified current circuit in the regenerative braking mode is carried out by unlocking transistors by means of control pulses with an angle w_on at time instants ωt=π-w_on electric degrees in first half-period, ωt=2π-w_on electric degrees in the second half-period. Discharge of the discharge arm is carried out by locking transistors by means of removing control pulses with angle w_off at instants of time ωt=w_off electric degrees in first half-period, ωt=π+w_off electric degrees in the second half-period. Angles w_on and w_off are selected based on the criterion of the maximum power factor measured in the primary winding of the traction transformer. Invention covers also design of electric rolling stock rectifier-inverter converter.

EFFECT: technical result consists in improvement of converter energy indices in the mode of recuperative braking.

2 cl, 4 dwg