METHOD FOR ENERGY INDICATORS IMPROVING FOR AC LOCOMOTIVES WITH SECONDARY POWER SUPPLY SOURCE BASED ON IGBT TRANSISTORS (MODULES) AGAINST CRITERION OF CONSUMPTION OF MAXIMUM ACTIVE POWER Russian patent published in 2015 - IPC H02M5/40 H02M5/453 G05F1/70 H02P27/06 B60L9/20 

FIELD: electricity.

SUBSTANCE: at the zone and phase control of a reversible converter, which power circuit is based on the usage of IGBT transistors (modules) as controlled power keys, arms ensuring operation of the non-controlled winding of a traction-feeding transformer are switched on each half period of the voltage at the moment of ωt=0 electrical degrees. They are switched off at the moment when ωt=140-150 electrical degrees, which coincides with the switch off time for the controlled winding of the traction-feeding transformer. Due to the above control the maximum compensation of an inductive load is ensured and active power is consumed maximally from the mains and the electromagnetic energy accumulated in the circuit of rectified current is used fully.

EFFECT: maximum effective usage of electromagnetic energy accumulated in the circuit of the rectified current to the supply of traction electric motors.