动车组多制式牵引传动系统设计探讨

Research Design on Multi-mode Traction Drive System of EMU

随着一带一路以及高铁走出去等发展战略的提出,适用于不同供电制式动车组的发展具有重要意义。目前多制式牵引传动技术的使用主要集中在电力机车领域,在动车以及高铁上尚未得到应用。针对一种适用于25 kV交流供电和3 kV直流供电的新型动车组多制式牵引传动系统的主电路结构、控制方法以及控制问题进行了论述。重点分析了多制式切换的暂态过程以及不同于传统牵引变流器的问题并给出了解决方案。最后从轨道交通领域安全要求入手,为了更好的利用多制式切换技术,对相关故障保护方案进行了探讨,对多制式牵引传动系统的设计具有一定的指导意义。

With the proposal of the"One Belt One Road"and going-out strategy of high-speed railway,the development of EMU applying to different power supply mode has an important meaning.The multi-mode traction drive technology is mainly used in the field of electric locomotive,and has not been used in bullet train and high-speed railway.This paper makes an exposition for the main circuit structure,control method and control problem of multi-mode traction drive system of new-type EMU applying to the 25 kV AC powersupply and 3000 kV DC power-supply.This paper mainly analyzes the transient process of the multi-mode switching and the problem different from the traditional traction converter,and gives the solution.Finally,starting with the safety of rail transit field,in order to better utilize the multi-mode switching technology,this paper makes a discussion about relevant fault protection scheme,which has a certain guiding significance for the design of multi-mode traction drive system.