scholarly journals Power supply for a CIP position for bearings

2021 ◽  
Vol 2021 (4) ◽  
pp. 554-560
Author(s):  
Alexey P. ZELENCHENKO ◽  
◽  
Anton A. BOGDAN ◽  
Murodilla Sh. SHADMONKHODZHAEV ◽  
◽  
...  
Keyword(s):  
Power Supply ◽  
Practical Importance ◽  
Motor Units ◽  
Electric Locomotive ◽  
Power Sources ◽  
Traction Motors ◽  
Bearing Diagnostics ◽  
Three Phase ◽  
Pulse Converter ◽  
Step Down

Objective: Two possible options for power sources are considered: a controlled three-phase bridge rectifi er circuit with a step-down transformer and a pulse converter receiving power from the network through an uncontrolled three-phase bridge rectifi er to drive the wheel-motor units of electric locomotives and electric trains into rotation with the required frequency at the position of CIP bearing diagnostics. In both cases, it is assumed that the power supplies receive electricity from the 380/220 V, 50 Hz network. The power source is loaded with traction motors of the ER2R, ER2T, ET2, ET2M electric trains and the VL-10 electric locomotive. Methods: Mathematical modeling is used in the MatLab/Simulink environment for analytical calculations. Results: The currents and voltages of the load were determined, based on the calculations, the control angles and power factors of the rectifi er with a step-down transformer, the duty cycle of the pulse converter. Practical importance: A variant of an energy-effi cient power supply is proposed, including an uncontrolled rectifi er and a pulse converter.

PULSE VOLTAGE CONVERTER APPLICATION FOR COMPENSATING THE CHARACTERISTICS OF SELF-GENERATED POWER SUPPLY OF AN ELECTRIC STOCK

2017 ◽  
pp. 92-100
Author(s):  
Vladislav Vasilyev ◽  
Alexey Tsaplyn
Keyword(s):  
Power Supply ◽  
Simulation Modeling ◽  
Practical Importance ◽  
Voltage Regulation ◽  
Voltage Source ◽  
Power Sources ◽  
Improve Energy Efficiency ◽  
Pulse Converter ◽  
Self Powered ◽  
Electric Traction

Objective: To improve energy efficiency of self-generated power supply usage on an electric stock, by means of pulse converter application. Methods: Calculation methods of electric lines, as well as simulation modeling with Matlab software programs and Simulink library package application were used. Results: A circuitry was offered, making it possible to extend the limits of self-generated power sources on an electric stock. A simulation computer program was developed in accordance with the suggested pulse converter circuit, providing an opportunity to study transient processes of tractive motors current and voltage regulation during acceleration and regenerative braking. Availability of the suggested circuit when dealing with an electric traction drive of a self-powered electric stock is corroborated by the results of simulation modeling. Practical importance: Switching converter application will make it possible to extend the range of use, by means of independent voltage source on the basis of capacity storage.

scholarly journals Design a three-phase step-down power supply based on ANSI/IEEE standard

2020 ◽  
Vol 1450 ◽  
pp. 012039
Author(s):  
D Suhantono ◽  
I M Sajayasa ◽  
I N Sukarma
Keyword(s):  
Power Supply ◽  
Phase Step ◽  
Three Phase ◽  
Ieee Standard ◽  
Step Down

Influence of distributed power supply in distributed power distribution network

2021 ◽  
pp. 1-8
Author(s):  
Xin Shen ◽  
Hongchun Shu ◽  
Min Cao ◽  
Nan Pan ◽  
Junbin Qian
Keyword(s):  
Power Supply ◽  
Power Distribution ◽  
Short Circuit ◽  
Power Grid ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Supplies ◽  
Power Distribution Network ◽  
Power Sources ◽  
Distributed Power

In distribution networks with distributed power supplies, distributed power supplies can also be used as backup power sources to support the grid. If a distribution network contains multiple distributed power sources, the distribution network becomes a complex power grid with multiple power supplies. When a short-circuit fault occurs at a certain point on the power distribution network, the size, direction and duration of the short-circuit current are no longer single due to the existence of distributed power, and will vary with the location and capacity of the distributed power supply system. The change, in turn, affects the current in the grid, resulting in the generation and propagation of additional current. This power grid of power electronics will cause problems such as excessive standard mis-operation, abnormal heating of the converter and component burnout, and communication system failure. It is of great and practical significance to study the influence of distributed power in distributed power distribution networks.

Regulator Circuit Transformer Voltage-Second Product Analysis

2014 ◽  
Vol 529 ◽  
pp. 501-505
Author(s):  
Chi Zhang ◽  
Ming Zhi He
Keyword(s):  
Power Supply ◽  
Power Electronic ◽  
Product Analysis ◽  
Power Regulator ◽  
Current Voltage ◽  
Three Phase ◽  
The Impact ◽  
Power Electronic Technology ◽  
Primary Current

With the continuous development of power electronic technology, the advantages of thyristor power regulator circuit gradually get more and more applications. It improves the quality of power supply, makes the equipment efficiency and power factor higher and so saves a lot of electricity. Through the calculation of the primary current when thyristor turns off in three-phase power regulator circuit with transformer load, the impact of the thyristors turn-off order on the transformer primary current voltage-second product is analysised, and through simulation the exactness is verified.

Selection and substantiation of main design parameters of catenary suspension for three-phase traction power supply system on tangent level track

2021 ◽  
pp. 69-77
Author(s):  
Boris Alexeevich Arzhannikov ◽  
◽  
Alexander Viktorovich Paranin ◽  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Current Collector ◽  
Supply System ◽  
Design Parameters ◽  
Main Design ◽  
Traction Power Supply System ◽  
Three Phase ◽  
Traction Power Supply ◽  
Traction Power

At development of common concept of current collection for three-phase traction power supply system there is the need to select and substantiate main design parameters of catenary suspension. For this purpose, the authors have carried out analytical calculations and developed a numerical mathematical model that allows assessing catenary statics and it’s dynamics in interaction with current collector. On the basis of results of modeling, the authors have substantiated and selected all the required parameters. In particular, they have determined the permissible speed of trains and maximal length of catenary spans.

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