Design and dynamics of electric rolling stock

2021 ◽  
Author(s):  
Andrey Evstaf'ev ◽  
Aleksandr Maznev
Keyword(s):  
Rolling Stock ◽  
Design Features ◽  
Traction Drive ◽  
Electric Rolling Stock ◽  
Spring Suspension

The physical foundations, theory, principles of selection and calculation of the main parameters of spring suspension schemes are presented, the issues of fitting crews into curves, the dynamics of traction drive, the use of coupling weight and vibrations of electric rolling stock, and the design features of modern locomotives are considered. For students and teachers, as well as anyone interested in this topic.

Dynamics of electric rolling stock

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".

Application of bidirectional isolated converters in a traction drive

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

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

2021 ◽  
Vol 1 (38) ◽  
pp. 141-152
Author(s):  
I. Riabov ◽  
S. Sapronova ◽  
V. Tkachenko ◽  
S. Goolak ◽  
R. Keršys
Keyword(s):  
Induction Motor ◽  
Electric Drive ◽  
Rolling Stock ◽  
Power Losses ◽  
Traction Drive ◽  
Energy Characteristics ◽  
Asynchronous Electric Drive ◽  
Traction Electric Drive ◽  
Electric Rolling Stock ◽  
Higher Harmonic

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.

scholarly journals NORMS AND METHODS FOR DETERMINING THE ELECTROMAGNETIC COMPATIBILITY OF MODERN AUTOMATIC LOCOMOTIVE SIGNALING SYSTEMS AND ELECTRIC ROLLING STOCK WITH AN ASYNCHRONOUS TRACTION DRIVE ON THE SUBWAY

2021 ◽  
Vol 7 (4) ◽  
pp. 503-521
Author(s):  
A. G. Kabetsky ◽  
◽  
A. D. Manakov ◽  
Keyword(s):  
Remote Control ◽  
Control Systems ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Speed Control ◽  
Rolling Stock ◽  
Traction Drive ◽  
Signaling Systems ◽  
Electric Rolling Stock ◽  
Traction Current

The article provides a brief overview of the development and application of automatic control systems for subway trains. Modern automatic locomotive signaling systems featuring automatic speed control with signal transmission based on double-phase-diff erence modulation are analyzed. The introduction of electric rolling stock with an asynchronous traction drive and advanced train traffi c automation and remote control systems at the St. Petersburg Metro initiates the drive to ensure their electromagnetic compatibility. For the subway train traffi c automation and remote control systems, there have been no acceptance criteria for electromagnetic interference that occur in their operating range when electric rolling stock with an asynchronous traction drive is put into operation. The article identifi es the main sources of conducted electromagnetic interference and the routes of their penetration into the receive path of automatic locomotive signaling devices with automatic speed control. A method is proposed for determining the limits of hazardous and interfering eff ects (immunity limits) for automatic train signaling systems with automatic speed regulation of the systems of the BARS automatic speed control unit with phase-diff erence modulation and the upgraded PA-M (ПА-М) train automation with phase-diff erence modulation for the St. Petersburg Metro lines. A method is given for the transition from the immunity limits of automatic locomotive signaling systems with automatic speed control to the emission limits of electric rolling stock at diff erent traction current unbalance factors. A technique for measuring traction current at high-potential points on electric rolling stock is considered. A technique for assessing the levels of conducted electromagnetic interference from electric rolling stock by calculating the eff ective value in a sliding window of a pre-fi ltered traction current signal of an electric rolling stock is presented.

ANALYSIS OF THE CREW PART OF THE LOCOMOTIVE TEM23 AND PROPOSALS FOR ELIMINATION OF DISADVANTAGES

2020 ◽  
Author(s):  
Dmitriy Antipin ◽  
Vladimir Vorobev ◽  
Denis Bondarenko ◽  
Gennadiy Petrov
Keyword(s):  
Vertical Plane ◽  
The Body ◽  
Diesel Locomotive ◽  
Design Features ◽  
Bogie Frame ◽  
Spring Suspension ◽  
In Series

The analysis of the design features of the bogie of the TEM23 shunting diesel locomotive is carried out. In the process of analysis, the directions of its improvement are determined. It is proposed to rotate the bogie frame in the vertical plane by reducing the body supports to two and using a pivot with low lowering, equip the bogies with pneumatic spring suspension in the form of two corrugations installed in series with shortened suspension springs. The proposed options for improving the undercarriage of a diesel locomotive will increase the competitiveness of products and reduce costs

scholarly journals Effect of transient processes on the switching stability of dc machines

2018 ◽  
Vol 239 ◽  
pp. 01036 ◽  
Author(s):  
Viktor Kharlamov ◽  
Pavel Shkodun ◽  
Andrey Ognevsky
Keyword(s):  
Magnetic System ◽  
Significant Proportion ◽  
Electrical Energy ◽  
Operating Conditions ◽  
Fine Tuning ◽  
Transient Processes ◽  
Rolling Stock ◽  
Electric Motors ◽  
Electric Rolling Stock ◽  
Switching Stability

Effective use of fuel and energy resources is one of the main tasks in modern industry and transport. The main directions of increasing the energy efficiency of the electric rolling stock of railways are considered in the paper. For the electric rolling stock of railways, a significant proportion of electric power consumption falls on traction needs. The consumption of electrical energy and its recovery directly depends on the proper operation and fine-tuning of the magnetic system and switching of traction electric motors of the rolling stock. The methods of testing traction electric motors currently used in railway transport do not fully correspond to their operating modes during operation. For more reliable control of their condition, a methodology for estimating the nature of the operation of traction electric motors in conditions close to real ones was proposed. Studies of the influence of transient processes on the quality of switching of traction electric motors taking into account operating conditions are carried out. Based on the results of the study, the analysis of the data obtained is carried out, and a criterion for estimating the switching stability of traction electric motors in transient operation modes is proposed. The proposed criterion allows carrying out quality control of the tuning of the magnetic system and switching of the traction electric motor, and also estimating the nature of its operation in various modes, taking into account the operating conditions.

The maintenance of electric rolling stock

1950 ◽  
Vol 1950 (12) ◽  
pp. 333-333 ◽  
Author(s):  
H.H.C. Barton
Keyword(s):  
Rolling Stock ◽  
Electric Rolling Stock

Improving the Efficiency of High-Speed AC Contact Suspension

2021 ◽  
Vol 5 (5) ◽  
pp. 39-43
Author(s):  
Maksim V. SHEVLYUGIN ◽  
◽  
Daria V. SEMENOVA ◽  
Keyword(s):  
Power Supply ◽  
High Speed ◽  
Single Phase ◽  
New Technologies ◽  
Alternating Current ◽  
Rolling Stock ◽  
New Materials ◽  
High Speed Railway ◽  
Electric Rolling Stock ◽  
Electrified Railways

When developing a high-speed contact suspension for railways electrified with alternating current, it is important to ensure that the electric rolling stock passes the neutral insert without turning off the current and without reducing the speed of movement. The article provides an analysis of previously developed devices in the field of power supply of electrified railways of single-phase alternating current, in which an attempt was made to pass an electric rolling stock of a neutral insert without disconnecting the load. The device of isolating coupling of a catenary and a neutral insert for high-speed railway lines electrified on alternating current is described. In this case, the passage of the neutral insert is carried out under current and braking of the electric rolling stock will not occur. Among other things, to improve the efficiency of high-speed contact suspension for railways electrified with alternating current, it is proposed to use new materials and new technologies that can be used in the device of insulating coupling of the catenary

scholarly journals Locomotive operation mode - the basis for developing the requirements for the energy storage device on railway transport

2018 ◽  
Vol 239 ◽  
pp. 01004
Author(s):  
Andrey Shatokhin ◽  
Alexandr Galkin
Keyword(s):  
Energy Storage ◽  
Direct Current ◽  
Electric Energy ◽  
Rolling Stock ◽  
Storage Device ◽  
Contact Network ◽  
Energy Storage Device ◽  
Electric Energy Storage ◽  
Operation Modes ◽  
Electric Rolling Stock

Increasing the efficiency of cargo transportation by rail is not only one of the main directions of the company JSC “Russian Railways” but also one of the main tasks of our country in order to achieve sustainable economic growth. Electric rolling stock is the largest consumer of electric energy in the company, that’s why its effective and failure-free operation is the way to solve the set tasks. The paper deals with studies related to the operation modes of a freight electric rolling stock of direct current for the purpose of determining the requirements for electric energy storage device, since it is the electric rolling stock that determines the daily schedule of electric load. The order of the analysis of experimental trips of freight electric locomotives of a direct current on the basis of cartridges of recorders of traffic parameters installed on the locomotive is determined. On the basis of the analysis of conducted trips, the main requirements for the energy storage device were obtained with a single running of electric DC rolling stock, namely the average duration of the operation modes of the electric locomotive, the maximum, minimum, and average values of voltage and current, the average value of the electric energy returned to the contact network, time of charge/discharge, and the useful energy intensity of the electric energy storage device. The studies were carried out with the support of the Russian Foundation for Basic Research for the project No 17-20-01148 ofi_m_RZD/17.

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