CALCULATION OF TRACTION AND ENERGY CHARACTERISTICS ELECTRIC ROLLING STOCK WITH ASYNCHRONOUS TRACTION ELECTRIC DRIVE

The issue of determining the traction and energy characteristics of electric rolling stock with asynchronous traction drive is considered. It is noted that such rolling stock can work at any point of the traction area, resulting in the need to determine the characteristics of the rolling stock for the entire traction area. The calculation of the characteristics of the traction induction motor, which are the basis for determining the traction and energy characteristics of the electric rolling stock, is considered in detail. A procedure based on the calculation of the replacement circuit of an induction motor is proposed. The calculation of power losses due to higher harmonic voltages and currents is considered. An example of calculation of traction and energy characteristics of an DC electric shunting locomotive with a traction asynchronous electric drive is given.

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A METHODOLOGY TO SELECT ASYNCHRONOUS TRACTION ELECTRIC DRIVE FOR INNOVATIVE METRO ROLLING STOCK

Collection of scientific works of the State University of Infrastructure and Technologies series Transport Systems and Technologies ◽

10.32703/2617-9040-2021-37-11 ◽

2021 ◽

Vol 1 (37) ◽

pp. 97-118

Author(s):

A. Sulym

Keyword(s):

Electric Drive ◽

Energy Savings ◽

Electric Energy ◽

Electrical Energy ◽

Rolling Stock ◽

Variable Frequency ◽

Electric Energy Consumption ◽

Asynchronous Electric Drive ◽

Traction Electric Drive ◽

Asynchronous Traction Motor

The paper deals with the justification of the need to use an asynchronous traction electric drive on the metro rolling stock. The advantages of using an asynchronous traction electric drive in comparison with a DC commutator motor drive are formulated. The characteristics of modern innovative metro rolling stock with asynchronous traction electric drive of domestic and foreign production are analyzed. Aspects of the choice of a variable frequency asynchronous traction electric drive for innovative rolling stock are formulated and the existing typical algorithm of such choice is given. The main reasons for the irrational choice of traction asynchronous electric drive for the metro rolling stock are considered and the consequences of such a choice are analyzed. It is proposed to improve the methodology for selecting a variable frequency traction asynchronous electric drive for the metro rolling stock in terms of such an important operational factor as the specific cost of electrical energy for traction. The rational parameters of the variable frequency asynchronous traction electric drive according to the proposed procedure for the specified characteristics of the metro rolling stock are specified. The reserves of energy savings for the given conditions due to the introduction of an asynchronous traction electric drive with rational parameters on the innovative rolling stock are determined. It is established that the efficiency factor of the asynchronous traction motor significantly affects the specific electric energy consumption for the metro rolling stock traction and operating costs.

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Development of the system of visual control of electric power consumption by electric rolling stock

MATEC Web of Conferences ◽

10.1051/matecconf/201823901035 ◽

2018 ◽

Vol 239 ◽

pp. 01035 ◽

Cited By ~ 1

Author(s):

Stanislav Istomin ◽

Artem Perestenko ◽

Cong Dang

Keyword(s):

Power Consumption ◽

Electric Power ◽

Electrical Energy ◽

Visual Control ◽

Electric Power Consumption ◽

Rolling Stock ◽

Power Losses ◽

Correct Analysis ◽

Electric Rolling Stock ◽

Train Driver

The paper considers the issue of organization of control of electric power consumption by electric rolling stock by visualizing information on the monitor of the driver's console. With the correct analysis of information coming on board of the electric rolling stock, the train driver makes correction of the driving modes of the train in terms of energy efficiency. In this paper, to visualize information on the efficiency of power consumption by an electric rolling stock on the route, the authors propose using an indicator diagram using a green, white, and orange gradient. The variant of output of the final information on the efficiency of power consumption of electrical energy by an electric rolling stock both within the distances operated by the locomotive crews and within the hauls to the monitor of the driver's console is presented. One of the main advantages of using the technology of visual control of electric power consumption by electric rolling stock is the promptness of correction of decision-making on the rational use of energy resources, the identification of objective reasons for the overspending of energy, and the identification of reference results for the driving of trains. The prospect of development of the research topic is the approbation and implementation of the proposed technical and technological solutions in the production, which will reduce the specific consumption and unproductive electric power losses within the boundaries of the railway accounting zones.

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Application of bidirectional isolated converters in a traction drive

Bulletin of scientific research results ◽

10.20295/2223-9987-2020-4-67-77 ◽

2020 ◽

pp. 67-77

Author(s):

T. S. Titova ◽

◽

M. V. Evstaf’yeva ◽

M. Yu. Izvarin ◽

◽

...

Keyword(s):

Output Voltage ◽

Initial Conditions ◽

Maximum Output Power ◽

Practical Importance ◽

Duty Factor ◽

Rolling Stock ◽

Maximum Output ◽

Traction Drive ◽

Bidirectional Converter ◽

Electric Rolling Stock

Objective: Analysis of the operation of a bidirectional isolated converter for a direct-current traction drive of electric rolling stock under various load conditions. Methods: Mathematical modeling was applied for the research. The results are presented in the form of mathematical relationships and graphs of currents and voltages. Results: The relationship between the output voltage and the duty factor of a bidirectional isolated converter has been revealed. The converters operation is considered at six characteristic intervals of a full cycle with the following initial conditions: i(t0) < 0, i(t0) = 0, i(t0) > 0. The main dependences of the current in the inductance, the input and output voltage, the shape of the voltage and current curves for different operation modes of a bidirectional converter are given. The duty factor is determined to obtain the maximum output power of the bidirectional converter. Practical importance: The proposed bidirectional isolated converter scheme makes it possible to implement traction and regenerative braking modes for a traction drive of a DC electric rolling stock. The simulation results show that with significant changes in load the system retains the specified characteristics, provides speed

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Electric Power Losses of Frequency Controlled Electric Drive with High-Voltage Induction Motor

2018 International Conference on Applied and Theoretical Electricity (ICATE) ◽

10.1109/icate.2018.8551428 ◽

2018 ◽

Cited By ~ 3

Author(s):

Svilen Rachev ◽

Lyubomir Dimitrov ◽

Konstantinos Karakoulidis ◽

Ivaylo D. Ivanov ◽

Cornelia-Victoria Anghel Drugarin

Keyword(s):

Electric Power ◽

Induction Motor ◽

High Voltage ◽

Electric Drive ◽

Power Losses

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Simulation of Electric Drive With Direct Torque Control of Induction Motor

JITA - Journal of Information Technology and Applications (Banja Luka) - APEIRON ◽

10.7251/jit1801005i ◽

2018 ◽

Vol 15 (1) ◽

Author(s):

Yuri M. Inkov ◽

Andrey S. Kosmodaminskiy ◽

Alexander A. Pugachev ◽

Elena V. Sachkova

Keyword(s):

Induction Motor ◽

Electric Drive ◽

Induction Motors ◽

Direct Torque Control ◽

Torque Control ◽

Voltage Source ◽

Voltage Source Inverters ◽

Electric Drives ◽

Traction Electric Drive ◽

Traction Drives

The main requirements for traction electric drives are listed and discussed. The direct torque control of an induction motor electric drive is established by a survey of operation modes of traction electric drives to thoroughly satisfy the requirements for traction electric drive. The topologies and operation principles of two-and three-level voltage source inverters are presented. The advantages and shortcomings of three-level voltage source inverters to be applied on locomotive traction drives are highlighted in relation to the two-level ones. The recommendations of choice between different voltage source inverter topologies are given. The topology and principles of operation of direct torque control of induction motors with two- and three-level voltage source inverters are described. The simulation peculiarities of electric drives with direct torque control and two- and three-level inverters in Matlab are considered. The simulation results are presented. The techniques to reduce the torque oscillations are shown and implemented in Matlab Simulink.

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Dynamics of electric rolling stock

10.12737/1013692 ◽

2021 ◽

Author(s):

Andrey Evstaf'ev ◽

Mihail Izvarin ◽

Aleksandr Maznev

Keyword(s):

Rolling Stock ◽

Traction Drive ◽

Electric Rolling Stock ◽

Spring Suspension ◽

Railway Rolling Stock

The textbook describes the physical foundations, theory, principles of selection and calculation of the main parameters of spring suspension schemes, discusses the issues of fitting crews into curves, vertical dynamics of the traction drive, the use of coupling weight and vibrations of electric rolling stock. It is intended for the training of certified specialists in the direction of "Railway rolling stock".

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ASYNCHRONOUS ELECTRIC DRIVE WITH REACTIVE POWER CONTROL

Tekhnichna Elektrodynamika ◽

10.15407/techned2021.05.049 ◽

2021 ◽

Vol 2021 (5) ◽

pp. 49-54

Author(s):

R.A. Chepkunov ◽

◽

Keyword(s):

Power Control ◽

Induction Motor ◽

Electric Drive ◽

Reactive Power ◽

Reactive Power Control ◽

Magnetic Flow ◽

Asynchronous Electric Drive ◽

And Control

The method of control of asynchronous electric drive, which based on measuring and control of reactive power of induction motor, is presented. It provides independence of magnetic flow of rotor from changes of induction motor parameters, uninterrupted diapason of regulation of speed including zero and fast regulation.

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