scholarly journals Rational modes determination of traction motors loading-back for electric rolling stock in mainline and industrial transport

2014 ◽  
Vol 0 (4(52)) ◽  
pp. 67 ◽  
Author(s):  
A. M. Afanasov
Keyword(s):  
Rolling Stock ◽  
Traction Motors ◽  
Electric 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.

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.

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.

Determination of the Energy Indices of Alternating Current Electric Rolling Stock Using Computer Simulation

2018 ◽  
Vol 89 (10) ◽  
pp. 612-616 ◽  
Author(s):  
A. A. Zaitsev ◽  
I. A. Rolle ◽  
M. V. Evstaf’eva ◽  
A. N. Sychugov ◽  
S. A. Telichenko
Keyword(s):  
Computer Simulation ◽  
Alternating Current ◽  
Rolling Stock ◽  
Electric Rolling Stock ◽  
Energy Indices

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 Damped vibrations method for measuring the rigidity of a system of movable frames of a current collector on the roof of an electric locomotive

2020 ◽  
Vol 217 ◽  
pp. 03001
Author(s):  
Alexander Smerdin ◽  
Anton Golubkov ◽  
Oleg Sidorov ◽  
Anatoly Slatin
Keyword(s):  
Human Factor ◽  
Mechanical Characteristics ◽  
Current Collector ◽  
Rolling Stock ◽  
Electric Locomotive ◽  
Mechanical Vibrations ◽  
Current Collectors ◽  
Electric Rolling Stock ◽  
A Current

The paper describes the features of using the method of damped mechanical vibrations for express diagnostics of current collectors without removing from electric rolling stock roof. The proposed method is based on preliminary determination of the mechanical characteristics of the system of movable frames of a serviceable current collector in the factory. The paper describes a technique that can significantly reduce the complexity of conducting this type of research, increase the speed of measurement, and reduce the influence of the human factor.

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
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