Automatic disabling of unpowered locked wheel fault detection for slipped traction motor pinion

摘要

A method for detecting a slipped traction motor pinion in a locomotive is disclosed. The locomotive may have a traction system and a controller in communication with the traction system. The traction system may have a wheel axle, a traction motor operatively connected to the wheel axle, a speed sensor associated with the traction motor, an inverter coupled to the traction motor, and a current sensor associated with the inverter. The method may include monitoring signals indicative of a speed of the traction motor received from the speed sensor, receiving current feedback associated with the inverter received from the current sensor, comparing the signals from the speed sensor to the current feedback, and determining that the traction motor is decoupled from the wheel axle based on the comparison of the signals from the speed sensor to the current feedback.

主权项

1. A method for detecting a slipped traction motor pinion in a locomotive having a traction system and a controller in communication with the traction system, the traction system having
a wheel axle, a traction motor operatively connected to the wheel axle, a speed sensor associated with the traction motor, an inverter coupled to the traction motor, and a current sensor associated with the inverter, the method comprising: receiving, within the controller, a signal from the speed sensor, the signal from the speed sensor being indicative of a speed of the traction motor; receiving, within the controller, current feedback from the current sensor, the current feedback being indicative of an electrical current through the inverter; comparing, via the controller, the signal from the speed sensor to the current feedback; and determining, via the controller, that the traction motor is decoupled from the wheel axle when the signal from the speed sensor indicates a substantial traction motor speed, and the current feedback indicates an insignificant load on the traction motor.