Feasibility Analysis of Switching on Rectifier Function of Regenerative Energy Feed Device

节能环保 ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 24-26
Author(s):  
Lun Han ◽  
Keyword(s):  
Pulse Wave ◽  
Power Transmission ◽  
Urban Rail Transit ◽  
Pwm Rectifier ◽  
Medium Voltage ◽  
Urban Rail ◽  
Output Characteristics ◽  
Traction Power Supply ◽  
Regenerative Energy ◽  
Feed Device

At present, the diode rectifier unit which is widely used in traction power supply of urban rail transit has the disadvantages of large DC output voltage fluctuation range and only one-way energy flow. By analyzing the output characteristics of the existing 12 pulse-wave rectifier units and the typical output characteristics of the medium-voltage energy-feed device, it is concluded that the energy-feed device is based on the high-power PWM rectifier and its power transmission and DC output characteristics are completely controllable, so it can be operated in parallel with 12 pulse-wave rectifier units.

scholarly journals Application of Traction Power Supply for Metro Rail Transit Based on Electromagnetic Sensing Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Junxia Shang
Keyword(s):  
Power Supply ◽  
Electromagnetic Induction ◽  
Public Safety ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Urban Rail ◽  
Electromagnetic Sensor ◽  
Traction Power Supply ◽  
Transit Operation ◽  
Traction Power

With the gradual acceleration of modernization, metro projects have been opened for the development and construction of urban areas. How to ensure the smooth operation of subway project in public service has become the focus of urban public safety service research. In view of this content, this paper studies the subway field of urban rail transit operation and improves the public safety of urban rail transit operation. Firstly, the factors affecting the track traction power supply are analyzed, the anti-interference technology of ring array electromagnetic sensor is added, and the research scheme is formulated according to the track potential research standard to ensure the operation of the power supply system. Then, the electromagnetic sensor traction algorithm is used to detect the subway track power supply signal, and the working characteristics and advantages of single electromagnetic induction and double electromagnetic induction are analyzed. The experimental results show that compared with the traditional electromagnetic sensor power supply signal detection algorithm, the content of this paper can judge whether the power supply is normal according to electromagnetic induction, detect whether the subway traffic deviates from the track traction coordinates, and understand the size of the deviation from the track. It improves the efficiency of traction power supply detection, stabilizes the running track of subway traffic, and is conducive to the protection and development of urban public safety.

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