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Journal: Young Scientist (Vol.7, No. 2)

Publication Date:

Authors : ;

Page : 225-229

Keywords : mine lifting installation; electric motor; control system; frequency characteristics; angular velocity;

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The question of determining the direction of increase in the efficiency of the operation of the systems of mine hoisting installations based on the modernization of tools and control algorithms is investigated. The essence of algorithmization of silos based on thyristor converters is described. Reasonably defining characteristics to improve the efficiency of silos with the use of variations in the frequency characteristics of power motors. Also, the problem of definition and substantiation of the direction of increasing the efficiency of the control system of mine lifting installations with the use of variations of the frequency characteristics of power electric motors is researched. The most promising for mine lifting installations control system based on angular speed regulation by changing the frequency of supply voltage and the main advantages of the system chosen by us in comparison with other systems is substantiated. Was highlighted that the main part of the identified problem is the inappropriate use of electric energy by the main lifting systems of the mine and the use of outdated control means, mainly based on the "generator – engine" system (G – E) and that old management system has some disadvantages, namely: low energy efficiency; low cosφ; the inertia of the regulatory process, etc., as well as certain incidents in operation. Substantiated why the thyristor converter is the main type of converters used in the conditions of the operation of the ESS in the coal industry, in a controlled electric drive of a direct current. Also substantiated why precisely the synchronous electric motors (SEM) in the system of the “frequency converter – synchronous electric motor” (FC – SEM) have higher energy indices than asynchronous electric motors (AED) and why they are used in unregulated electric and high-power electric motors with a long operating mode. It is substantiated how significant electric energy consumption by modern coal mines of Ukraine falls on the most important mine lifting installations. The actual directions for improving their efficiency are determined by improving the systems of control of mine lifting installations.

Last modified: 2019-06-05 17:20:29