A New Method of Designing High-Power Electroplating Power Supply

With the development of power electronics technology, people are attaching great attention to the efficiency of power supply and power quality. Aiming at lots of harmonics which high-power electroplating power supply produced in the grid side, low power factor and much energy loss are also serious problem. The three-level PWM rectifier technology is applied to high-power electroplating power supply occasion in this paper. Designed a double closed loop control system which contains voltage outer loop and current inner loop. A new simulation model has been established based on Matlab/Simulink. The scheme is proved to be effective, available and achieved the goal of unit power factor operation, less harmonics, high efficiency.