METHOD OF ADJUSTING EXCITATION CURRENT OF DIESEL LOCOMOTIVE BRAKING TRACTION MOTORS Russian patent published in 2013 - IPC B60L11/00 

FIELD: transport.

SUBSTANCE: invention relates to railway transport, particularly, to means of adjusting excitation current in electric transmission of diesel locomotive with self-contained heat engine, AC traction generator operated in diesel locomotive electric braking mode. Proposed method consists in setting heat engine rpm, exciting traction generator to be connected to circuit composed of braking motor excitation windings connected in series and to be loaded by three-phase bridge-type uncontrolled rectifier to excite braking traction motors. Motors rpm is measure, motor armature current is measured to be compared with setting to feed the comparison result to input of controlled supply rectifier so that excitation current may be adjusted. Results of said comparison are used to vary the structure of control system of traction generator excitation winding supply controlled bridge-type rectifier built around the thyristor.

EFFECT: higher reliability and stability of operation.

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