scholarly journals Optimization of control systems for suburban trains

2021 ◽  
Vol 2021 (4) ◽  
pp. 499-506
Author(s):  
Alexander I. CHUDAKOV ◽  
◽  
Valery O. IVASHCHENKO ◽  
Alexey P. ZELENCHENKO ◽  
Nikolay V. LYSOV ◽  
...  
Keyword(s):  
Control System ◽  
Control Systems ◽  
Practical Importance ◽  
Bipolar Transistors ◽  
Rolling Stock ◽  
Power Circuit ◽  
Operating Modes ◽  
Effi Ciency ◽  
Pulse Converter ◽  
Electric Train

Objective: The use of pulse conversion of electricity on direct-current traction rolling stock is discussed. Methods: A variant of the system for regulating the operating modes of traction motors of suburban electric trains using a pulse converter based on insulated gate bipolar transistors is described. (IGBT). Results: The proposed impulse control system is presented as a possible option for the modernization of the applied control systems, which makes it possible to improve the traction and energy indicators of suburban electric trains. The advantages of pulse converters based on IGBTs are shown in comparison with converters based on one- and two-operation thyristors. A simplifi ed electrical diagram of the power circuit of a motor car with a pulse converter is presented, a description of the operation of the power circuit in the traction mode and in the modes of rheostatic and regenerative braking is given. Practical importance: The presented results of the technical and economic comparison of the control systems of the ED4M electric train with a Современные технологии – транспорту 505 ISSN 1815-588Х. Известия ПГУПС 2021/4 contactor-rheostat control system and an electric train with regulation of the operating modes of traction electric motors by a pulse converter based on IGBT prove the best energy effi ciency of an electric train equipped with a pulse control system

PERSPECTIVE DIRECTIONS FOR THE IMPROVEMENT OF ENERGYOPTIMAL PARAMETERS AND TRACTION PROPERTIES OF THE LOCOMOTIVE

2017 ◽  
pp. 161-173
Author(s):  
Nikolay Mikhalchuk
Keyword(s):  
Control System ◽  
Solid State ◽  
Power Systems ◽  
Power Control ◽  
Control Systems ◽  
Control Parameter ◽  
Practical Importance ◽  
Electric Energy ◽  
Rolling Stock ◽  
Technical Solutions

Objective: To develop and justify energy-efficient and energy-saving control technology of traction electric drive with maximum realization of traction properties. Methods: Mathematical modeling, experimental manufacturing of prototypes of the converters and control system. Results: Theoretical justification was presented, based on refinement of the theory of energy processes in electrical circuits with solid state power controllers. It was proposed to apply electrical resistance of elements in electric power systems as a power control parameter instead of the conventional voltage. It was revealed that, in contrast to the existing analogues, semiconductor power regulators of different application with a new control parameter acquire the property of the electric variator. Technical solutions for manufacturing an innovative traction electric rolling stock were introduced with the use of advanced technical solutions of power control with adaptive control system that provides improved traction properties without shortening irreversible transformation of electric energy of power semiconductor devices. As an example, the solutions involving artificial intelligence in control systems of complex technical systems were presented, based on graphics processors, neural networks, providing parallel processing of large information arrays. Practical importance: Introduction of electric solid state variable speed with adaptive, intelligent control systems will significantly raise energy efficiency and improve the implementation of traction parameters of the locomotive.

scholarly journals Improving the energy efficiency of electric drives for auxiliary units of traction rolling stock

2021 ◽  
Vol 2131 (4) ◽  
pp. 042085
Author(s):  
T S Titova ◽  
A M Evstaf’ev ◽  
A A Pugachev
Keyword(s):  
Energy Efficiency ◽  
Control Systems ◽  
Induction Motor ◽  
Induction Machine ◽  
Rolling Stock ◽  
Electric Drives ◽  
Operating Modes ◽  
Stator Current ◽  
Power Loss Reduction ◽  
Rotor Winding

Abstract The review of technical solutions and schematic characteristics of auxiliary drives for traction vehicles has shown that the most rational variant is an electric drive with an induction machine. Given the operating modes of the auxiliary drives and the share of their power consumption in the total locomotive power, the task of using scalar control systems for induction machines becomes relevant. Based on a mathematical model describing the dynamic energy conversion processes in the T-shape substitution circuit of an induction motor, taking into account stator steel losses and current displacement effects in the rotor winding and saturation along the main magnetic path, possibilities for reducing stator current have been investigated. In order to improve the energy efficiency of electric drives two variants of control system have been proposed. One based on search method of self-tuning to the stator current minimum and the other - on maintaining the power factor of induction motor at the level that ensures equality of active and reactive components of stator current. The hardware and software requirements for implementing control systems have been analysed. Modelling using Matlab has shown that both control systems work - power loss reduction can be as low as 50% and as high as 60% in certain modes.

scholarly journals Modeling a multifunctional static converter for a hybrid transport power system of traction rolling stock

2021 ◽  
pp. 119-131
Author(s):  
Аleksey Е. TSAPLIN ◽  
Keyword(s):  
Power System ◽  
Practical Importance ◽  
Power Converter ◽  
Rolling Stock ◽  
Control Algorithms ◽  
Operating Modes ◽  
Static Power ◽  
Management Functions ◽  
Hybrid Circuit ◽  
Storage Units

Objective: Modeling of processes in a multifunctional static converter. Methods: Methods for calcu- lating electrical circuits and simulation in the MATLAB software using the Simulink library package are applied. Results: The circuit solutions have been chosen and the development of control algorithms for a multifunctional static power converter for a hybrid transport power system has been carried out. A multi-convector hybrid circuit with two power storage units was chosen for the analysis of the work. Practical importance: The developed model makes it possible to assess the rational power management functions of a hybrid transport power system for various operating modes, confirming the expediency of configuration and choice of circuit solutions when creating a converter for a hybrid transport power plant.

Increasing the energy efficiency of an electric train by installing electric energy storage units

2020 ◽  
Vol 17 (4) ◽  
pp. 449-464
Author(s):  
N. P. Kalinin ◽  
◽  
M. Yu. Obukhov ◽  
Keyword(s):  
Energy Efficiency ◽  
Energy Storage ◽  
Practical Importance ◽  
Electric Energy ◽  
Integrated Approach ◽  
Economic Feasibility ◽  
Rolling Stock ◽  
Electric Energy Storage ◽  
Storage Units ◽  
Electric Train

Objective: To increase the energy effi ciency of the Russian multi-unit rolling stock of railways by installing electric energy storage devices. Methods: The goal is achieved by applying integrated approach method to the problem of multi-unit rolling stock energy efficiency, with focus on the practical signifi cance and economic feasibility of the results. Results: The solutions produced can serve as a basic concept for the modernization of domestic rolling stock. Practical importance: Concepts of an electric train with electric energy storage units based on Russian electric trains have been developed in order to increase their energy efficiency.

scholarly journals DEVELOPMENT OF STRUCTURAL SCHEMES AND OPERATION ALGORITHMS FOR THE AUTOMATIC CONTROL SYSTEM OF A MULTIFUNCTIONAL ENERGY COMPLEX

2021 ◽  
Vol 445 (1) ◽  
pp. 82-90
Author(s):  
G. Kalimbetov ◽  
A. Toigozhinovа ◽  
W. Wojcik
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Control Systems ◽  
Dynamic Control ◽  
Control Object ◽  
Control Device ◽  
Automatic Control Systems ◽  
Operating Modes ◽  
Quality Of Control

Among the promising automatic control systems, logical-dynamic control systems that change both the structure and parameters of the control device using switches formed on the basis of a certain logical algorithm have proven themselves well. The use of logical algorithms as part of MACS subsystems for complex technical objects makes it possible to increase the static and dynamic accuracy of control due to purposeful qualitative and quantitative changes in the control signal. This approach will give the control system fundamentally new properties that allow to fully take into account the nature and dynamics of the movement of the control object. When developing existing logical control algorithms, the issues of their application for multi-connected and multifunctional objects control were not considered. Common to existing logical algorithms is that when switching the structure and/or changing parameters, only the dynamics of its own subsystem is taken into account, which is unacceptable in the case of multi-connected dynamic object control, since cross-links have a significant impact on the quality of control. Thus, the problem of synthesis of logical algorithms for multi-connected objects control is an actual theoretical and applied problem. Despite the considerable amount of research conducted in this area, the application of logical algorithms for complex multidimensional objects control is not sufficiently considered, and there is no unified design concept for this type of MACS, taking into account the required quality of functioning in various operating modes. In this regard, there is a need to synthesize algorithms for logical multi-connected control that form control signals in order to coordinate the actions of all separate MACS subsystems in accordance with new external conditions and operating modes. The problem under consideration determined the purpose of this work and the research objectives.

scholarly journals Experimental studies of electromagnetic fields on electric rolling stock

2021 ◽  
pp. 48-58
Author(s):  
N. A. Sergeenkov ◽  
◽  
A. N. Gorskiy ◽  
P. Yu. Vasiliev ◽  
◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Control Systems ◽  
Rolling Stock ◽  
Electric Locomotive ◽  
Electronic Components ◽  
Electric Rolling Stock ◽  
Permissible Levels ◽  
The Magnetic Field ◽  
Electric Train

Objective: To identify the influence of electromagnetic interference of various origins on the func- tioning of electronic components of control systems in electric rolling stock (ERS) and radio commu- nication devices, and the effect of electromagnetic fields (EMF) on humans. To carry out experi- mental studies of the ERS EMF characteristics taken as source data, allowing to assess the need to take appropriate actions to ensure electromagnetic safety. One of such measures is the optimal ar- rangement of electric equipment in the driver’s cabin of an electric locomotive or electric train, which will make it possible to achieve the minimum electric and magnetic field strength values under specified conditions. Methods: Direct measurement of the electromagnetic field characteristics in the driver’s cabin of a new 2ES-5 (2ЭС-5) AC electric locomotive (joint production of Transmashhol- ding JSC, Russia, and Alstom, France), as well as on a 2ES4K (2ЭС4К) DC electric locomotive (driver’s cabin, high-voltage chamber, electric locomotive roof) and an ED4M (ЭД4М) DC electric train (dri- ver’s cabin, train car). In the driver’s cabin, measurements were carried out near the working appa- ratus, near the driver’s and assistant's seats and at frequencies for which the maximum permissible levels have been set. Results: The magnetic field strengths (as having the greatest effect on the func- tioning of the electronic components of the ERS control systems and on the person) in the driver’s cabin of electric locomotives and electric trains were measured at different currents under the fol- lowing conditions: starting, traction, braking in the high-voltage chamber and on the electric locomo- tive roof. Practical importance: The given electromagnetic field characteristics do not exceed the specifications set forth in the regulatory documents of the Russian Federation. However, when trains move, there are bursts of EMF strength values due to transient processes in the power supply sys- tem: on DC ERS, the magnetic field strength in the driver’s cabin reached 100 A/m, the electric field strength — 8,5 kV/m, magnetic induction on the DC electric locomotive roof — 400 μT. These values exceed the maximum permissible levels and require the relevant actions to ensure electromagnetic safety.

Monitoring system of electrodynamic braking of DC electric train with collector traction motors

2018 ◽  
Vol 77 (5) ◽  
pp. 301-309
Author(s):  
V. A. Baranov ◽  
I. P. Vikulov ◽  
A. A. Kiselev ◽  
A. S. Maznev
Keyword(s):  
Control System ◽  
Monitoring System ◽  
Eddy Currents ◽  
Low Cost ◽  
Standard Equipment ◽  
Power Circuit ◽  
Traction Motors ◽  
Braking Control ◽  
Recuperative Braking ◽  
Electric Train

High proportion of electric trains with collector trac-A monitoring system of electrodynamic braking has been develotion motors in the multiple unit fleet and its low cost in comparison ped with preservation of the electric train standard equipment. It al-with electric trains with an asynchronous traction make it neces-lows regulating the recuperative current depending on the possibility sary to improve the control system of motor collectors. One of the of its consumption by changing the resistance of the braking resistors. ways is to create devices to improve the efficiency of recuperative Imitation model of DC electric train power circuit in the electrobraking. dynamic braking mode with a monitoring system was developed.It takes into account the influence of eddy currents in the motor frame, armature current ripples and the catenary voltage increase during recuperative braking.Electromagnetic processes in the electric train power circuit are investigated. Analysis of the obtained oscillograms shows the change in the armature current and the catenary voltage within the specified limits in the braking mode. Recuperative current regulator is tuned to an aperiodic transient with a time equal to 0.015 s.The paper shows possibility of the monitoring system to regulate the armature current in the recuperative mode together with the automatic braking control system in case of increasing the catenary voltage. When the voltage fails, the monitoring system is not able to limit the increasing braking current, its reduction is effected by the magnetic flux of the traction motors.Adjusting characteristic and the technical effect from the implementation of the monitoring system are calculated. The possibility of reducing the electric power consumption by 4.62 % is shown.

scholarly journals Synthesis of a fuzzy controller for identification and quantification of disturbances by trends

2021 ◽  
Vol 2094 (4) ◽  
pp. 042084
Author(s):  
E A Muravyova ◽  
R F Imaev
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Heat Exchanger ◽  
Automatic Control ◽  
Control Systems ◽  
Fuzzy Controller ◽  
Practical Importance ◽  
Heating Cycle ◽  
System State ◽  
Control Actions

Abstract This article describes the main stages of constructing a fuzzy controller that identifies disturbances in the automatic control system by trends on the example of the brine cycle, namely, heating the purified one going to electrolysis. This method can be implemented in perturbation control systems for the formation of control actions, as well as for diagnostic purposes. The aim of the study is to synthesize a fuzzy controller for identifying and quantifying perturbations by trends. The article proposes a method for estimating perturbations by trends. A mathematical model of processes implemented in the Mathcad environment is constructed. A conceptual model of a fuzzy controller for determining the perturbation is implemented. As a result of the research conducted on the basis of the proposed method, two fuzzy controllers were synthesized that quantify disturbances in the water heating cycle, namely: the deviation of the temperature of the purified brine entering the heat exchanger, as well as the deviation of the water temperature in the tank from the norm. The developed project is of practical importance, since the information about disturbances obtained as an output value from the fuzzy controller can be used in the diagnosis and assessment of the system state at any time, which, in turn, can be used for smoother control when applying a correction signal to the controller that controls the dampers and pumps, as well as to prevent accidents.

scholarly journals Imitation model of heat flows distribution in building heating control system

Vestnik IGEU ◽  
2021 ◽  
pp. 70-79
Author(s):  
S.K. Ulybyshev ◽  
B.A. Staroverov
Keyword(s):  
Heat Transfer ◽  
Control System ◽  
Automatic Control ◽  
Control Systems ◽  
Heating System ◽  
Imitation Model ◽  
Heat Flows ◽  
Operating Modes ◽  
Functional Scheme ◽  
Dynamic Heating

Implementation of automatic heating control systems allows us to reduce heat consumption by 10% in residential areas and 40% in office and educational buildings. Currently, there are heating control systems, however, they are applied only to a single-level two-pipe heating system. Development of an imitation model of heat flows redistribution is necessary to synthesize the system of interconnected dynamic heating control of a building. Unlike existing solutions, this research work considers the problem of unbalanced heat flow in a multi-level hierarchical heating system. Calculation of convective heat transfer in the room assumes that the air temperature at any given time is the same throughout the entire room. When we determine heat transfer through walling, it is assumed that the walling or its part has the same temperature of the planes perpendicular to the direction of air flow. In this case, the heat transfer process is described by a one-dimensional heat transfer equation. The developed model of heating control systems allows us to connect the automatic control modules, change control algorithms at the compilation stage and in the system state during the simulation process. In comparison with possible analogue models based on AnyLogic or ANSYS modeling systems, the presented model is the model of controlled object. It is easily combined with models of automatic control units and considers the problem of imbalance of heat flows. An example of the functional scheme of the local temperature control system around one battery is considered. Implementation of developed imitation model makes it possible to ensure a new level of quality control of technological processes of production and consumption of power energy resources by using modern information technologies and synthesizing a system of interconnected dynamic heating control. Possibilities of such modeling are focused on development of the uninterrupted and high-quality heat supply system, maintaining energy-efficient operating modes, as well as actual economic effect. The model under consideration allows us to simulate redistribution of heat flows in different operating modes of the heating system.

scholarly journals Study of the control algorithm of the braking system of an autonomous haul truck braking system with the use of imitational models

2021 ◽  
Vol 315 ◽  
pp. 03021
Author(s):  
Dmitry Dubinkin ◽  
Alexander Kartashov ◽  
Alexander Muraviev ◽  
Nikolai Buzunov ◽  
Ilya Khlobystov
Keyword(s):  
Control System ◽  
Mathematical Models ◽  
Control Systems ◽  
Control Algorithm ◽  
Brake System ◽  
System Control ◽  
System Behavior ◽  
Operating Modes ◽  
Braking System ◽  
Haul Truck

The paper considers different ways of controlling the braking systems of haul trucks. The general approaches used in the development of control systems for such braking systems are described. Methods of testing and imitational mathematical models, used for the analysis of brake system control systems operation, are presented. The developed control system and the imitational model allow us to analyze the brake system behavior under different operating modes of a haul truck.

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