Improvement of the current-limiting devices of collector traction motors of direct-current electric rolling stock

2017 ◽  
Vol 88 (10) ◽  
pp. 661-665 ◽  
Author(s):  
A. S. Maznev ◽  
A. B. Nikitin ◽  
I. M. Kokurin ◽  
A. M. Kostrominov ◽  
E. I. Makarova
Keyword(s):  
Direct Current ◽  
Rolling Stock ◽  
Traction Motors ◽  
Electric Rolling Stock ◽  
Current Limiting

Prospects of improving technical and economic indicators of electric rolling stock

2020 ◽  
pp. 57-64
Author(s):  
Alexander Sergeevich Maznev ◽  
◽  
Alexander Alexandrovich Kiselev ◽  
Vladimir Аndreevich Usov ◽  
Аnnа Аndreevna Kalinina ◽  
...  
Keyword(s):  
Direct Current ◽  
Economic Indicators ◽  
Rolling Stock ◽  
Electric Locomotive ◽  
Traction Motors ◽  
Electric Rolling Stock ◽  
Instantaneous Values ◽  
Autonomous Voltage Inverter ◽  
Pulse Regulation ◽  
Technical And Economic Indicators

The paper considers methods of improving technical and economic indicators of direct current electric rolling stock. The authors propose a scheme of electric drive with pulse converters that are controlled by instantaneous values of armature and exciting currents. The scheme provides the realization of regenerative and resistance braking on almost the entire speed range. The paper also presents frequency characteristics of converters at speed from 5 to 100 km/h and proposes a scheme of direct current electric locomotive with pulse regulation of voltage on three connections of traction motors. Moreover, the authors discuss a structure of autonomous voltage inverter with group switching and reduced number of fully controlled semiconductor devices and present methods to prevent wheelspin through changing their load on rails and excitement of traction motors.

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.

scholarly journals Electromagnetic processes of charging of on-board supercapacitor storage system during the regenerative braking mode of DC electric rolling stock with series-wound DC motors

2018 ◽  
Vol 180 ◽  
pp. 02007
Author(s):  
Anatolii Nikitenko
Keyword(s):  
Initial Conditions ◽  
Storage System ◽  
Rolling Stock ◽  
Regenerative Braking ◽  
Dc Motors ◽  
Traction Motors ◽  
Electric Rolling Stock ◽  
Electromagnetic Processes ◽  
Multiple Unit ◽  
Experimental Researches

The paper is dedicated to the task of improving of regenerative braking of a DC train with the series-wound DC traction motors. It is proposed the schematic solution for the trains with DC motors, which is based on the storing of recovered energy by the on-board supercapacitor storage system and extending the speed range of regenerative braking. The scheme is described by expressions which allowed to build the time dependences of main values. In addition, the experimental researches with the multiple-unit train were performed to find initial data for calculations and verification the results. The transient processes of charging are analyses for different cases of storage capacitances, residual voltages and initial speed of braking. It was proved, that the scheme allows to increase the value of recovered energy up to 40%, but its value strongly depends on the initial conditions and parameters of the system.

Electric apparatus and circuits of rolling stock

2020 ◽  
Author(s):  
Aleksandr Maznev ◽  
Oleg Shatnev
Keyword(s):  
Professional Education ◽  
Rolling Stock ◽  
Educational Institutions ◽  
Technical Data ◽  
Traction Motors ◽  
Semiconductor Converters ◽  
Electric Rolling Stock ◽  
Railway Workers ◽  
Element Base ◽  
Electrical Apparatus

Provides information about technical data and design of electrical apparatus of control, monitoring and protection of traction motors of electric rolling stock (EPS), the principles of speed control of locomotives and trains with contactor-resistor and semiconductor converters based on modern element base, a circuit diagram of various types of EPS with manifold and induction motors in modes of traction and braking. For students of institutions of secondary professional education. It may be useful to students of higher educational institutions, courses of improvement of qualification, the railway workers related to the maintenance and repair of rolling stock.

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

Intelligent technologies applied to increase the energy efficiency of electrified direct-current rolling stock

2017 ◽  
Vol 88 (10) ◽  
pp. 676-680 ◽  
Author(s):  
A. A. Zaitsev ◽  
A. M. Evstaf’ev ◽  
D. V. Pegov ◽  
A. V. Krylov
Keyword(s):  
Energy Efficiency ◽  
Direct Current ◽  
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

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