Functional efficiency enhancement of diesel-electric locomotive traction system

The paper presents the electric traction system of main line of two-unit freight diesel locomotives. There was offered the modernization of a combined system of diesel engine start-up and a power supply for consumers of an onboard network using a synchronous machine in the starter/generator mode, which allows to increase efficiency of a locomotive electrical equipment usage. There were pointed out the ways of improvement of a regular axle control in order to increase traction and power characteristics of diesel locomotives. Suggested solutions improve the traction and antislip locomotive characteristics by modernizing the traction transmission system and an electrical equipment microprocessor control algorithms.