Research on Cleaning of Traction Converter Filter of CR400BF-G EMU Based on PHM System
According to the alarm logic of the traction converter of CR400BF-G,combined with the experience threshold of temperature of the cooling liquid in inlet and outlet of traction converter,this paper proposes a condition-based maintenance model of filter screen of traction converter cooling system under different temperature environment,and two EMUs were selected for pilot verification.Tracking and analyzing the filter screen state,coolant outlet temperature,coolant inlet temperature,coolant temperature in the box and air temperature data of the traction converter cooling system of the pilot EMU,verifying that the proposed condition-based maintenance model was feasible and the set threshold has room for optimization;Data analysis shows that the performance of cooling system of traction converter decreases gradually when the dirty blocking degree of filter screen reaches about 70%in winter;Coolant inlet and outlet temperatures,coolant and air temperatures in the tank are basically consistent with the degree of filter mesh fouling,so the monitoring logic of coolant and temperature in the tank can be added when the model is optimized.
万方数据
维普
