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 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.

Assessment of performance reliability of transformers

Innotrans ◽  
2020 ◽  
pp. 50-53
Author(s):  
Alexander V. Okunev ◽  
◽  
Anastasia A. Ivanova ◽  
Alexander A. Philipiev ◽  
◽  
...  
Keyword(s):  
Calculation Model ◽  
Rolling Stock ◽  
Equipment Failure ◽  
Voltage Level ◽  
Traction Substation ◽  
Freight Traffic ◽  
Electric Rolling Stock ◽  
Traction Substations ◽  
Electrical Apparatus

Increase of freight traffic resulted in increased loads on traction substations and, respectively, in increase of their equipment failure risks. In the context of maintaining the required voltage level and power quality, which determine appropriate values in reliability for traction substation transformers, the article looks upon solving the problem of determination of reliability essential parameters. A proposed calculation model makes it possible to simplify the choice of electrical apparatus for uninterrupted power supply of electric rolling stock traction.

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.

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

Principles of Integration of Agricultural Educational Institutions and Processing Enterprises of Agro-Industrial Complex

2020 ◽  
pp. 75-80
Author(s):  
V.I. Volkov ◽  
Keyword(s):  
Vocational Education ◽  
Professional Education ◽  
Scientific Literature ◽  
Strategic Partnership ◽  
Educational Institutions ◽  
Industrial Complex ◽  
Russian Scientific ◽  
Reliable Basis

The article deals with the problems of development of agricultural vocational education in Russia and the possibility of its improvement based on the development of the process of interaction of agricultural educational institutions with processing enterprises of the agro-industrial complex of the country. The article discusses the possibility of creating a strategic partnership between the subjects of agricultural vocational education, which can become a reliable basis for the introduction of practice-oriented training. The study of the concept of «principle», presented in the dictionaries of Russian scientific literature, as well as the analysis of the principles of inte-raction of subjects of professional education, proposed by different authors. The possibility of using the proposed principles in the process of organizing interaction between agricultural edu-cational institutions and processing enterprises of the agro-industrial complex is investigated.

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

Actual problems of municipal law in Russia

2021 ◽  
Author(s):  
Al'fiya Akmalova
Keyword(s):  
Higher Education ◽  
Professional Education ◽  
Research Work ◽  
Educational Institutions ◽  
Federal State ◽  
Municipal Law ◽  
State Educational ◽  
The University ◽  
Independent Work ◽  
Improvement Of Legislation

The actual problems of municipal law in Russia are considered taking into account the peculiarities of master's degree training at the university, which provides for both the presence of a system of students with certain knowledge in the field of jurisprudence, including the main institutions of municipal law, and their significant focus on research work. Special attention is paid to the consideration of the main amendments and additions to the current legislation on local self-government, discussions that accompany the improvement of legislation and law enforcement practice. The electronic educational and methodological appendix to the textbook includes an approximate work program and educational and methodological materials for independent work on the study of the discipline, as well as lectures and presentations. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of educational institutions of higher education studying in the field of training 40.04.01 "Jurisprudence", as well as for graduate students, students of the system of additional professional education and teachers, all those who are interested in the problems of the development of municipal law, the theory of local self-government and the practice of state and municipal management.

Sign in / Sign up

Export Citation Format

Share Document