scholarly journals Modernization of Control Systems of Electric Drives of Mine Lifting Machines

2018 ◽  
Vol 41 ◽  
pp. 03006
Author(s):  
Ziyodullo Eshmurodov ◽  
Folib Holboiv
Keyword(s):  
Control System ◽  
Control Systems ◽  
Electric Drive ◽  
Control Algorithm ◽  
Frequency Converter ◽  
Automated Control ◽  
Electric Drives ◽  
Squirrel Cage ◽  
Drive Control ◽  
Efficient Control

The article shows the peculiarity of the system of technological automation of the newest Simatic S7-1500 PLCs, for electric drives of hoisting transport machines, the analysis of control systems for electric drives of operating mine hoisting machines of mining complexes. One of the main ways to increase the energy efficiency of MLM is to replace old asynchronous electric motors with a phase rotor with squirrel cage induction motors designed for operation in a frequency-controlled electric drive. The introduction of a frequency converter and an electric drive control system, which together allow the recovery of electricity in the supply network in the mode of generator braking. Thus, the system for automated control of the mine hoisting machine based on the Simatic S7-1500 PLC, with the developed control algorithm, is an integrated energy-efficient control system, which it is advisable to use in the management of the SHM.

scholarly journals Development of an intelligent electric drive control system anchor winch

2021 ◽  
pp. 195-200
Author(s):  
С.П. Черный ◽  
 А.В. Бузикаева ◽  
А.К. Тимофеев
Keyword(s):  
Control System ◽  
Control Systems ◽  
Intelligent Control ◽  
Electric Drive ◽  
Fuzzy Controller ◽  
Electric Drives ◽  
Intelligent Control System ◽  
Advantages And Disadvantages ◽  
Drive Control ◽  
Control Procedures

Данная работа посвящена моделированию интеллектуальной системы управления электроприводом якорной лебедки с применением теории нечетких множеств. Был приведен анализ существующих систем управления электроприводами якорно-швартовных узлов основанных на различных традиционных схемах регулирования, показаны достоинства и недостатки традиционных систем управления, а также выявлены основные возмущения, носящие существенно-недетерминированный характер. Процедуры интеллектуального управления в реализуемой модели системы управления электроприводом реализуются нечетким регулятором. Интеллектуальная система управления в своей основе имеет нечеткий регулятор с алгоритмом вывода Сугено, формализация входных сигналов по ошибке осуществляется двумя лингвистическими переменными. Кроме того, показано преимущество предлагаемого подхода при построении систем управления электроприводами якорно-швартовных узлов на основании базовых показателей качества. This paper is devoted to the modeling of an intelligent control system for the electric drive of an anchor winch using the theory of fuzzy sets. The analysis of the existing control systems for electric drives of anchor and mooring units based on various traditional control schemes was given, the advantages and disadvantages of traditional control systems were shown, and the main disturbances of a significantly non-deterministic nature were identified. Intelligent control procedures in the implemented model of the electric drive control system are implemented by a fuzzy controller. The intelligent control system is based on a fuzzy controller with the Sugeno output algorithm, the formalization of input signals by error is carried out by two linguistic variables. In addition, the advantage of the proposed approach in the construction of control systems for electric drives of anchor and mooring units on the basis of basic quality indicators is shown.

scholarly journals ALGORITHM FOR SYNTHESIS OF QUASI-OPTIMAL IN SPEED THIRD-ORDER SYSTEMS WITH APERIODIC SLIDING MODE

2021 ◽  
Vol 1 (38) ◽  
pp. 48-56
Author(s):  
O. Derets ◽  
O. Sadovoi ◽  
H. Derets
Keyword(s):  
Control System ◽  
Control Systems ◽  
Electric Drive ◽  
Sliding Mode ◽  
Block Diagram ◽  
Order System ◽  
Practical Implementation ◽  
Third Order ◽  
Relay Control ◽  
Electric Drives

The relevance of the work is due to the growing requirements for the dynamic characteristics of electric drives. In particular, together with the requirements of ensuring high accuracy and maximum at given speed limits, a typical task of designing such systems is the mandatory formation of transition diagrams in the form of monotonic time functions. The purpose of this study is to develop an adaptive algorithm for the synthesis of the third-order sliding mode control systems based on the method of N-i switching. Changing the shape of transient trajectory depends on the magnitude of the movement, which requires adaptation of the settings of the control system of the electric drive to the features of the current positioning mode. On the basis of the N-i switching method, an algorithm for synthesizing the parameters of a re-lay control system with cascade-subordinated structure, ensures non-oscillatory initiation of a sliding mode at various positioning modes, has been created. It is constructed by integrating the results of a number of previous works, in which the synthesis of relay control systems based on the analysis of the roots of the sliding equation of the position regulator is performed. This algorithm cannot be formally considered as an optimization tool due to the incompatibility of this problem with the aperiodization taken as the purpose, which comes about for certain forms of transient trajectories. But for such cases, the loss of performance relatively optimal one is negligible. Thus, the result of the application of the proposed algorithm in most practically significant cases is an optimal third-order system with aperiodic entry into the sliding mode. When controlling the electric drive, such a system will ensure the monotonous nature of the movement of the working body of the electromechanical system. The developed block diagram is focused on the practical implementation of the algorithm by the software of controllers of precision electric drives.

scholarly journals Functional scheme of the transformer-rectifier unit of the centrifugal oil cleaning installation

2021 ◽  
pp. 20-27
Author(s):  
Valentina Tarasova ◽  
Andrii Hnatov ◽  
Shchasiana Arhun ◽  
Andrii Nechaus ◽  
Dmytro Shymuk ◽  
...  
Keyword(s):  
Control System ◽  
Dynamic Characteristics ◽  
Electric Drive ◽  
Power Supply ◽  
Transfer Functions ◽  
Transformer Oil ◽  
Automated Control ◽  
Electric Drives ◽  
Automated Control System ◽  
Functional Scheme

Annotation. Problem. The reduction of reliability, economical and mass-dimensional indicators is one of available ways for centrifugal cleaning transformer olives installations, which based on electric drives with icreased frequency. In addition to the development and calculation of the power scheme of the installation, the issue of developing an calculation power supply system from the industrial power system is relevant. In this case, the task of developing and researching a voltage and frequency converter, which is an intermediate link between the industrial power system and the centrifugal oil cleaning installation and provides the specified parameters of electricity, requires the solution of additional partial problems.  Goal. The goal is to develop and study the functional scheme of the transformer-rectifier unit with an automated output voltage control system for the installation of centrifugal cleaning of transformer oil. Methodology. Analytical methods of research, methods of the theory of electric machines and electric drives, and also methods of calculation of transfer functions of elements of the automated control systems and their dynamic characteristics are used. Results. The structural scheme of the transformer-rectifier unit with the automated control system of the output voltage of the installation for cleaning transformer oil on the basis of the electric drive of the increased frequency is developed. Calculations of transfer functions of elements of the offered automated control system of the transformer-rectifier unit are executed and its dynamic characteristics are investigated. Originality. The scheme of the transformer-rectifier unit for installation of centrifugal cleaning of transformer oil with the electric drive of the increased frequency is developed and investigated. Practical value. The introduction of centrifugal transformer oil cleaning units with a high-frequency electric drive will increase the reliability, economy and weight of such units. The calculations allow us to draw conclusions about the compliance of the proposed scheme of the transformer-rectifier unit with an automated voltage control system for reliability and dynamic characteristics of the requirements for the secondary power supply of the centrifugal oil cleaning installation.

Modeling the Dynamics of Robot Motor Drive Control System

2013 ◽  
Vol 467 ◽  
pp. 510-515
Author(s):  
Аmandyk Tuleshov ◽  
Кassymbek Ozhikenov ◽  
Ruslan Utebayev ◽  
Erkebulan Tuleshov
Keyword(s):  
Control System ◽  
Electric Drive ◽  
Comparative Evaluation ◽  
Current Drive ◽  
Motor Drive ◽  
Adaptive Stabilization ◽  
Coordinate Regulation ◽  
Electric Drives ◽  
Drive Control ◽  
Adaptive Regulator

This work studies the effectivenessof applyingadaptive regulatorindirect current drive control system ofmanipulator robot link. An adaptive stabilization ofcontrol system dynamics by directly modifying the transfer factor of electric drive regulator was carried out. In turn, this causes simplification of the system with adaptive regulator and its technical implementation. This system was modeled inMATLAB (Simulink). A comparative evaluation of the results of modeling of electric drives with adaptive regulator with traditionally used methodology coordinate regulation was carried out. It is shown that the usage of adaptive regulator in electric drives systemdelivers desired dynamic characteristics of the manipulator.

scholarly journals A comparative study of performance of AC and DC electric drive control systems with variable moment of inertia

2021 ◽  
Vol 10 (2) ◽  
pp. 588-597
Author(s):  
Addasi E. Said ◽  
Abdullah M. Eial Awwad
Keyword(s):  
Control System ◽  
Control Systems ◽  
Electric Drive ◽  
Moment Of Inertia ◽  
Motor Shaft ◽  
System Operation ◽  
Drive Control ◽  
The Moment ◽  
The Impact ◽  
Variable Moment

In electric drive control systems, the main goal is to maintain the driving motor speed to meet the mechanism’s requirements. In some practical industrial applications the mechanically-coupled load to the motor shaft has a varying mass during the system operation. Therefore, the change of mass changes the value of the moment of inertia of the system. The moment of inertia impacts the system operation, particularly the transient performance. Therefore, the variation of moment of inertia on the motor shaft during its operation creates additional challenges to accomplish a high-quality speed control. The main purpose of the current work is to study the impact of the variation of moment of inertia on the performance of both AC and DC electric drive control systems and to make a comparison between them. A mathematical analysis and simulations of the control system models had been presented; one time with three-phase induction motor and another time with DC motor, both with variable moment of inertia. A simulation of both systems had been accomplished using the Simulink software in MATLAB. The simulation results of operation of these systems have been analysed in order to get useful conclusions and recommendations for the electric drive control system designer.

scholarly journals REDUCING ENERGY COSTS AND INCREASING THE RELIABILITY OF THE ELECTRIC DRIVE OF PUMPING UNITS BY INTRODUCING A FREQUENCY CONVERTER INTO THE CONTROL SYSTEM

2020 ◽  
pp. 59-61
Author(s):  
V. D. Zhokhov ◽  
S. P. Smolyakov ◽  
A. D. Zhokhov ◽  
Yu. P. Serdobintsev
Keyword(s):  
Control System ◽  
Control Systems ◽  
Electric Drive ◽  
Frequency Converter ◽  
Programmable Logic Controller ◽  
Energy Costs ◽  
Programmable Logic ◽  
Pumping Stations ◽  
Pumping Units ◽  
Reducing Energy

The analysis of the principle of operation of pumping stations and their control systems is carried out. An algorithm for controlling pumping units using a frequency Converter (if) has been developed. Based on this algorithm, software for a programmable logic controller (PLC) was created.

scholarly journals EVALUATION OF QUALITY INDICATORS OF MODERN CONTROL SYSTEMS OF DMZ WAGON TRANSMITTER DRIVE BY MATHEMATICAL MODELING

2021 ◽  
pp. 210-213
Author(s):  
Alexander Yudin ◽  
Vadim Nezhurin ◽  
Victor Kuvaiev
Keyword(s):  
Control System ◽  
Control Systems ◽  
Induction Motor ◽  
Quality Indicators ◽  
Electric Drive ◽  
Frequency Converter ◽  
Dc Motor ◽  
Thyristor Converter ◽  
Drive Systems ◽  
System Frequency

The results of the analysis of quality indicators of the proposed control systems for the electric drive of the DMZ ore yard with rheostatic tilt speed control, using alternative the system "thyristor converter - DC motor" and "frequency converter - induction motor", by studying the transients of these electric drive systems using the software product Matlab. It is established that the parameters of the control system "frequency converter - induction motor", are not inferior to the parameters of the control system "thyristor converter - DC motor", and even slightly exceed it, in particular, in the range of technological speeds of the wagon tipper drive, and energy losses during transient start-up processes are 2.3% less than the "thyristor converter - DC motor". It is expedient to use the offered decisions in case of modernization of the operating electric drive of the wagon tipper.

scholarly journals Analysis of the control system of electric motors of the running gear of self-propelled mine cars used in complex mining and technological conditions

2020 ◽  
Vol 216 ◽  
pp. 01135
Author(s):  
Alim Haqberdiev ◽  
Javokhir Toshov
Keyword(s):  
Motor Control ◽  
Control System ◽  
Control Systems ◽  
Electric Drive ◽  
Electric Motor ◽  
Frequency Converter ◽  
Asynchronous Motor ◽  
Electric Motors ◽  
Power Circuit ◽  
Motor Control Systems

This article discusses the disadvantages of electric motor control systems for the running gear of mine self-propelled cars of the 5vs-15M brand used for transporting ore to conveyor transport at the Tyubegatan potash Deposit and analyzes the use of a control system with a frequency Converter. Based on the results of the analysis of the recommended possible options for the electric drive, it is advisable to conduct further studies of the electric drive based on an asynchronous motor and a power circuit of a frequency converter.

scholarly journals MATHEMATICAL SIMULATION OF INDUCTION MOTOR SCALAR CONTROL SYSTEM

2021 ◽  
Author(s):  
Viktor Marus ◽  
Aleksandr Pugachev
Keyword(s):  
Energy Efficiency ◽  
Control System ◽  
Mathematical Simulation ◽  
Control Systems ◽  
Induction Motor ◽  
Electric Drive ◽  
Electric Drives ◽  
Scalar Control ◽  
Simulation Results

The simulation results of 4 kW induction motor electric drive with scalar control system and different control topologies are presented. The perspective directions of further investigations on improving energy efficiency of electric drives with scalar control systems are highlighted.

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