市域快轨双制式供电的牵引主回路及高压设备研究

Traction System Main Circuit and High-voltage Equipment for Regional Express with Dual-Mode Power Supply

市域快轨双制式供电能有效连接城市轨道交通和干线铁路体系,充分发挥交、直流供电系统各自的优点,在市郊区域有较大的优势和发展前景。首先根据交、直流供电系统的特点,提出整合交、直流供电车载牵引系统方案;然后介绍主电路的配置、受电弓,以及高压检测、保护装置等器件本身针对双制式供电进行的适应性更改;其次,具体介绍牵引变流器中四象限整流器,中间直流环节,逆变器和滤波电抗器的优选方案,辅助逆变器的布置、变压器隔离的方案和变流器冷却方式的选择;最后,提出对牵引电机在冷却方式、功率、质量和外形尺寸方面的基本需求。

The regional express w ith dual-mode pow er supply,w ith the advantages of both AC and DC pow er supply systems,can effectively connect the urban rail and the main railw ay line systems,having great development prospects in the suburban areas. Firstly,Based on the characteristics of tow pow er supply systems,this paper puts forw ard the scheme of integrating AC and DC pow er supply traction systems,and then introduces the configuration of the main circuit and the adaptive modification of the pantograph,the high voltage detective,protective devices for the dual-mode pow er supply systems. Secondly,the scheme of the four-quadrant rectifiers,DC links,inverter and filter reactors in the traction converter is introduced in detail,and the integration of the auxiliary converter and the isolation-transformer program and the choice of converter cooling mode are mentioned. Finally,the basic requirements for traction motors in terms of cooling modes,pow er,w eight,and dimensions are presented.