METHOD OF PROTECTION AGAINST SLIPPING OF WHEEL PAIRS OF ELECTRIC ROLLING STOCK WITH ASYNCHRONOUS TRACTION MOTORS Russian patent published in 2024 - IPC B60L3/10 B60L15/20 B61C15/08 

FIELD: electric vehicles.

SUBSTANCE: group of inventions relates to control of the traction system of electric vehicles. The method of protecting electric rolling stock with asynchronous traction motors from slipping consists in setting the direct torque for the asynchronous traction motor, measuring the current angular speed of the asynchronous traction motor shaft and the current linear speed of the locomotive, converting the angular speed of the motor shaft into the peripheral speed of the wheelset, compare the current peripheral speed of the wheelset and the current linear speed of the locomotive. If there is no difference between the peripheral speed of the wheelset and the current linear speed of the locomotive, which characterizes increased slipping of the wheelset, a reference action equal to the direct torque of the reference is determined. If there is a difference between the peripheral speed of the wheel pair and the current linear speed of the locomotive, the setting influence is switched from direct torque control to the torque generated by the PI speed controller, with feedback on the peripheral speed of the wheel pair, and from the torque value generated by the PI speed controller, subtract a value equal to ten percent from the value of the direct torque of the task once.

EFFECT: improved traction properties of electric rolling stock.

1 cl, 1 dwg