DocumentCode :
2873181
Title :
A railway power quality conditioner based on chain circuit
Author :
Ding, Na ; Shu, Zeliang ; Guo, Yuhua
Author_Institution :
Dept. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China
fYear :
2011
fDate :
7-10 Nov. 2011
Firstpage :
1150
Lastpage :
1154
Abstract :
To improve the power quality of electrified railway system, a new railway power conditioner (RPC) is proposed. The RPC consists of three single-phase voltage source converters based on the chain circuit inverters. It connects the railway traction power system directly without isolation transformer. Power rating of the conditioner can be increased simply by adding chain links in series. The proposed topology is suitable for traction power system with impedance-matching balance transformer. Regarding the traction substation as a control object, the power quality of the traction substation with RPC can be improved integrally. The RPC always makes the traction substation become a nearly balanced three-phase power system in the public grid whether the loads of two feeders are balanced or not. According to simulation results, the proposed RPC is feasible, and it can compensate reactive power, harmonic, and negative-sequence currents in two feeders together.
Keywords :
impedance matching; invertors; power convertors; power grids; power supply quality; power transformers; railway electrification; substations; traction; chain circuit inverters; chain links; control object; electrified railway system; harmonic compensation; impedance-matching balance transformer; negative-sequence currents; power rating; public grid; railway power quality conditioner; railway traction power system; reactive power compensation; single-phase voltage source converters; traction substation; Harmonic analysis; Power quality; Power system harmonics; Rail transportation; Reactive power; Substations; chain circuit; electric railway; power quality; traction substation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
ISSN :
1553-572X
Print_ISBN :
978-1-61284-969-0
Type :
conf
DOI :
10.1109/IECON.2011.6119470
Filename :
6119470
Link To Document :
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