Novel automatic resonance arc suppression controller based on high speed SoC MCU

Taking C 8051F MCU(Micro Control Unit) as its core,an auto-tracking arc-suppressing controller with master-slave structure is designed.The inductance value of arc-suppression coil is changed by using the TSC(Thyristor Switched Capacitor) technique to switch on-off the parallel connected secondary capacitors.The SoC(System on Chip) technique is introduced.Functions and designs of controller modules are analyzed in detail,including data sampling monitoring,outlet,com-munication and human-machine interface.The equipment is already commissioned and operates well,and its characteristics meet requirements of automatic compensation of earthing fault capacitive current.