The du/dt and di/dt of high voltage high power DC power supply for ESP with high frequency link

as well as corona and spark from electrostatic precipitator

exert severe electromagnetic interference on the control circuit.In order to solve this problem

an optimized design of the control system with electromagnetic compatibility is conducted

and a method to suppress the main noise source of power electric circuit is proposed.The application of the design and the method in a power supply with output power 60 kW

output voltage 60 kV and switch frequency 20 kHz verifies their effectiveness.