辅发励磁斩波器直流输入对机车电路影响分析

Analysis of Influence of Auxiliary Excitation Chopper DC Input on Locomotive Circuit

介绍了给辅助发电机励磁的斩波器改为直流输入应用时对内燃机车电路的影响,并对故障现象、故障查找、故障原因及解决办法进行了阐述和说明,确定故障原因是由于电路设计改变后,励磁斩波器内部的支撑电容接通的瞬间引起了机车蓄电池电压跌落,造成数字信号采集错识,进而导致逻辑控制错乱。最后提出了解决故障的办法,并通过试验验证了分析结论和解决办法的正确性。

This paper introduced the influence of changing the excitation chopper of auxiliary generator to DC input on the circuit of diesel locomotive, and expounded the phenomena of faults, the search for faults, the causes of faults and the solutions of faults. It was determined that the faults were caused by the instantaneous connection of the supporting capacitor in the excitation chopper after the circuit design changes. Pool voltage drops, resulting in digital signal acquisition errors, which led to logical control disorder. Finally, the solution to the problem was put forward, and the correctness of the analysis conclusion and the solution was verified by the test.