Abstract
In 2014, more than 43 cities in China were racing to construct their urban rail systems (including metro and light rail systems), recognizing that an urban rail system will be a good solution to the tough problems that they are faced with, including traffic congestion and PM2.5 air pollution. On 22 August 2012, the first electric double-layer capacitor (EDLC) energy storage-type rail vehicle in the world was unveiled at Zhuzhou Electric Locomotive Co., China. The EDLC rail system has been considered a promising sustainable urban rail system, which is expected to further improve the energy efficiency and to reduce environmental pollution. The first commercial EDLC tram produced by Zhuzhou Electric Locomotive Co. has been applied at Guangzhou Metro Corp. recently. From the view point of scientific research, the system design and energy management of EDLC rail systems have been extensively studied in the literature, while the stationary charging station design for the EDLC energy storage-type urban rail vehicles has been rarely reported. Thus, the aim of this paper is to report a stationary charging station that has been successfully applied in the EDLC rail system produced by Zhuzhou Electric Locomotive Co., China.
Highlights
Having benefited from rapid economic development for over 30 years, China finds itself coping with the relatively new phenomena of rapid urbanization [1]
The rail vehicles are still mainly powered by the overhead line or third track, while the energy storage system (ESS) only works as a supplementary power source to improve the power network performance
The urban rail vehicle is charged with a constant current of 900 A until the charging voltage increases to the desired voltage, 750 V
Summary
Having benefited from rapid economic development for over 30 years, China finds itself coping with the relatively new phenomena of rapid urbanization [1]. The urbanization rate in China grew from. 20% in 1980 to 46.7% in 2010, and the urban population increased by almost 350 million over the last 30 years [2]. To accommodate the rapidly-increasing population, the urbanized area has expanded to the outlying rural areas, which lengthens travel distance and encourages the desire to travel by car. The registered numbers of automobiles in China increased from 12.8 million in 1990 to 140 million in. This rapid motorization led to serious traffic congestion and PM2.5 air pollution in China, especially in metropolises and some mid-sized cities.
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