scholarly journals Industrial frequency single-phase AC traction power supply system for urban rail transit and its key technologies

2016 ◽  
Vol 24 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Qunzhan Li
Keyword(s):  
Power Supply System ◽  
Single Phase ◽  
Supply System ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Traction Power Supply System ◽  
Urban Rail ◽  
Traction Power Supply ◽  
Traction Power ◽  
Industrial Frequency

Concept of URT Traction DC Microgrid and its Application Feasibility Study

2014 ◽  
Vol 1070-1072 ◽  
pp. 1361-1365
Author(s):  
Xiao Jun Shen ◽  
Chuan Bao Yu ◽  
Shi Min Zhao
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Urban Rail Transit ◽  
Rail Transit ◽  
Generation System ◽  
Dc Microgrid ◽  
Traction Power Supply System ◽  
Urban Rail ◽  
Traction Power Supply ◽  
Traction Power

Firstly, based on the structure of urban rail transit traction power supply system and the characteristics of typical dc microgrid, a concept of urban rail transit traction power dc microgrid was proposed in the paper, and the feasibility of photovoltaic generation system, fuel cells generation system and energy storage system gridded to urban rail transit traction power supply system were studied; and then the functions and advantages of the proposed traction dc microgrid were surveyed from energy-saving and power supply reliability; finally, based on analyzing the electrical characteristics of urban rail transit traction catenary, some key issues of urban rail transit traction dc microgrid technology to be solved were discussed.

scholarly journals Research on Control Strategy of AC-DC-AC Substation Based on Modular Multilevel Converter

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Fei Chang ◽  
Zhongping Yang ◽  
Fei Lin
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Single Phase ◽  
Supply System ◽  
Multilevel Converter ◽  
Traction Power Supply System ◽  
Three Phase ◽  
Phase Converter ◽  
Traction Power Supply ◽  
Traction Power

Significant disadvantages in power quality especially the unbalance problem and neutral sections restrict the evolution of conventional traction power supply system. A new traction power supply system based on three-phase to single-phase converter is studied, which can transfer active power from three-phase grid to single-phase catenary. One catenary section could be utilized in the new traction power supply system instead of the multiple split sections in conventional system. Three-phase to single-phase converter is the core equipment of new traction power system. MMC (modular multilevel converter) structure of AC-DC-AC substation is proposed in this paper. To solve the problem of the capacitor voltage balancing in MMC, a parallel sorting algorithm based on field programmable gate array (FPGA) is studied. And the correctness and effectiveness of the algorithm are verified by experiments. In addition, it is inevitable that the AC grid voltage will be unbalanced caused by the fault in the new system. Therefore, this paper focuses on the analysis of the effect of the unbalanced grid voltage on the operating characteristics of the MMC system. Finally, the correctness of the theoretical analysis is verified by simulation.

Advanced Cophase Traction Power Supply System Based on Three-Phase to Single-Phase Converter

2014 ◽  
Vol 29 (10) ◽  
pp. 5323-5333 ◽  
Author(s):  
Xiaoqiong He ◽  
Zeliang Shu ◽  
Xu Peng ◽  
Qi Zhou ◽  
Yingying Zhou ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Single Phase ◽  
Supply System ◽  
Traction Power Supply System ◽  
Three Phase ◽  
Phase Converter ◽  
Traction Power Supply ◽  
Traction Power
Sign in / Sign up

Export Citation Format

Share Document