Locomotive traction motor control system

Details Locomotive traction motor control system Locomotive traction motor control system

1993-07-28

1995-02-28

Le, Mark T.

Railway rolling stock

Locomotives

Electric

105 49, 374153, B61C 300

Patent

active

053927168

ABSTRACT:
A locomotive traction motor control system includes a traction motor suspended by traction motor suspension bearings, such as roller bearings in a bearing assembly, and traction motor suspension bearing temperature sensors, such as thermistors, for sensing a temperature of the traction motor suspension bearings. A controller, such a microprocessor based controller, receives a hot bearing indication from a hot bearing detection unit (HBDU) connected to the suspension bearing temperature sensors. The controller generates a warning indication based on the temperature sensed by the suspension bearing temperature sensors when the HBDU detects an improper bearing temperature. The control system also facilitates detection and warning of an improper stretch braking condition and subsequently limits current to the traction motors in response to detecting the improper stretch braking condition.

REFERENCES:
patent: 2961875 (1960-11-01), Reumund
patent: 4340886 (1982-07-01), Boldt et al.
patent: 5145322 (1992-09-01), Senior et al.

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