CRH5G型动车组制动系统制动力分配的逻辑优化

Logic optimization of braking force distribution for braking system of CRH5G EMUs

在CRH5G型动车组运营前期的动态调试过程中,受部分铁路区段接触网压影响,使电制动发挥异常,在长大坡道的调速过程中完全由空气制动完成制动力的施加,使制动盘和闸片长期处于异常高温状态,可靠性降低而易发生故障。文章针对存在问题,通过优化制动力分配的逻辑结构,对制动力分配的方案进行了优化与升级。线路实测和制动盘热负荷计算分析证明,优化的方案能够有效地减少制动系统故障,节能降耗,持续提高我国高速列车高能效水平。

During the pre-operational dynamic debugging process of CRH5 G EMUs, the train was affected by the contact pressure of some railway sections, and the electric brake function was abnormal, in the process of speed adjustment on the long ramp, the braking force was completely applied by the air brake, which caused the brake discs and the brake pads to be in abnormally high temperature condition for a long time, thereby, the reliability decreased and prone to failure. This paper aimed at the existing problems, optimized and upgraded the scheme of brake force distribution by optimizing the logical structure of brake force distribution. The calculation and analysis of the actual load and the heat load of the brake disc prove that the optimized scheme can effectively reduce the braking system failure, save energy, reduce the consumption, and continuously improve the energy efficiency of high-speed trains.