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一、引言在我国铁路客车上,普遍采用L型车电装置,它由车轴驱动的直流发电机和两组蓄电池组成。根据有关部门调查,目前出现的最严重问题之一是蓄电池在运用中损坏较多,並且经常达不到应有的容量与使用期限。每年需要补充许多新电池,其主要原因是由于列车运行的多变性,充电与放电不象一般固定设备那样有规律;另外,发电机的功率,蓄电池容量和负荷之间的王作,也不
I. INTRODUCTION In China’s railway passenger cars, the L-type car electric device is widely used. It consists of an axle-driven DC generator and two battery packs. According to the investigation of the relevant departments, one of the most serious problems that appear at present is that the batteries are damaged more frequently during operation, and often fail to meet the required capacity and service life. Many new batteries need to be replenished each year mainly because of the variability of train operation. Charging and discharging are not as regular as regular stationary equipment. In addition, the power between the generator, battery capacity,