For solving the key technology in the design of medium voltage 10 kV TSC

namely

the electrical isolation issue between synchronous triggering and triggering control of series SCR and main circuit

a kind of Buck constant current source is adopted as trigger power source

using high voltage cables and magnetic ring transformer as the trigger unit

MCU as core for control and the trigger control of 10 kV TSC is achieved by way of controlling the AC and DC operation mode of trigger power source.The whole design is composed of the selection of TSC main circuit

trigger control scheme of TSC

circuit design of trigger power source and triggering synchronization and drive control.The operating principle of circuit is analyzed and such objective as simple

reliable

practical and efficient design is achieved.