Intelligent Control of Human-machine Interface Based on the Control of Main Circuit Breaker of HXD3C Electric Locomotive
HXD3C electric locomotive(its operation on the driver's console is achieved by adopting virtual simulation operation)is equipped with one main circuit breaker,which is installed in the high-voltage electrical cabinet inside the electric locomotive.While the pantograph is in the ascending state,press the switch key to switch the main break"close".And after a series of logical judgments,the solenoid valve controlling the main break is connected to power and the compressed air will flow into the main circuit breaker to make its main contact closed.Press the switch key to switch the main break"off",the control solenoid valve loses power,and the main circuit breaker is disconnected.There are two independent auxiliary power supplies(UA11 and UA12).UA11 supplies power to traction fans,cooling tower fans,etc.UA12 supplies power to oil pumps,car body fans,and air compressors.When a certain set of auxiliary converter fails,the fault conver sion electromagnetic contactor is closed,and the other set of auxiliary converter can bear all the auxiliary motor load of the locomotive.At this time,the auxiliary converter works according to the fixed frequency and fixed voltage mode.According to the control requirements and train traction control platform,the control circuit design,PLC program design and intelligent control and monitoring design of touch screen are realized.
main circuit breaker controlPLCtouch screenintelligent control
万方数据
维普
