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包钢白云鄂博铁矿现有可控硅励磁电动挖掘机20余台,其电力拖动系统均采用综合磁性触发器控制可控硅励磁的直流发电机—电动机拖动系统,综合磁性触发器作为控制系统的中心枢纽,利用铁心磁势来综合给定信号、电压负反馈信号以及电流截止负反馈信号,输出综合控制信号触发由可控硅组
Presently, there are more than 20 silicon controlled electric excavators in Baiyunebo Iron & Steel Mine of Baotou Iron & Steel Co., Ltd. Its electric drive system adopts the integrated magnetic trigger to control the silicon-controlled DC generator-motor drive system. The integrated magnetic trigger acts as The central hub of the control system, the use of iron core magnetic potential to a given signal, the voltage negative feedback signal and the current cut-off negative feedback signal, the output control signal triggered by the SCR