Research of Dynamics of the Systems of Electric Drive for Mine Electric Locomotives in the Conditions of Iron-Ore Enterprises
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Abstract
In the article it is marked that work of mine electric locomotives takes place in specific terms. It is related to that the presence of gaps in coupling devices complicates the terms of flowing of transients in mine composition, and resilient shots in coupling devices can considerably exceed basic values. It is similarly marked that the presence of gaps complicates positioning of trolleys at unloading - loading, when the trolleys of composition move an electric locomotive on short distances. In the article the brought results of research of three systems of electric drive of mine electric locomotive of type of 14КА - regular system of the Relanium management by speed of engine of direct-current, systems an impulsive transformer is an engine of direct-current with a relay regulator, and systems a transformer of frequency is an asynchronous engine with a vectorial management. Exactness of support of speed of electric locomotive is select the criterion of comparison according to the set three-cornered diagram of motion. A research was conducted by facilities of mathematical design. At a design influence of properties of the coupled devices - considerable size of gap(to 0,2 meters), and presence of resilient shock absorbers was taken into account. The considerable shuttles of electric locomotive are explained by that at an acceleration - braking of trolley leave with resilient shots and then go after each other, and also with resilient shots. It was taken into account that engine of electric locomotive - direct-current series-wound, id est has soft electromechanics description. It was set that gaps that at first were serried, at an acceleration - braking create considerable resilient efforts. The greatest influence these resilient efforts render on the system with the Relanium management, considerably revolting speed of electric locomotive. It is set that stabilizing of speed mine to the electric locomotive in the dynamic modes worse in the system of vectorial management, what in the system with the relay regulator of speed. At the use of the systems of vectorial management speed of electric locomotive is indignant insignificantly, and at the use of relay regulator speed of electric locomotive is not indignant practically. The last grounds at a necessity partial modernisation of electric drive of electric locomotive without re-engining to recommend introduction of relay regulator of speed, as decision that allows to attain high exactness of stabilizing of speed.
Bibl. 10, pic. 7.
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