Study on high-power high-frequency switching electroplate power supply based on digital control

In this paper,the digital control of high-power high-frequency switching electroplates power supply is realized with DSP(Digital Signal Processor) TMS320LF2407A,and the system design of main circuit and PWM digital control technique of phase-shift full-bridge converter are investigated.The supply is designed with module structure,and different module communicates with each other through CAN(Controller Area Network) bus.This design style makes it easy to realize N+1 redundancy structure,and enhance flexibility and reliability of supply system.To validate the effectiveness of the proposed control methods in this paper,three-12V/1000A shunt-connection high-frequency switching electroplate power supplies are built and experimental results show that the supply is of good control performance.