A new type of sinusoidal DC 48V-AC 220V power supply based on one-cycle control

摘要

A new type of sinusoidal DC 48V-AC 220V converter based on one-cycle control is presented in this paper. This paper describes the basic principle of one-cycle control in brief and sets up a mathematical model. According to the mathematical model, the advantages and drawbacks of one-cycle control are analyzed. Through adjusting the system parameters, the DC-AC converter based on one-cycle control can reject the input-perturbation and load disturbance instantly. All of these are demonstrated by simulations. Fast dynamic response of the output makes it very suitable to the small UPS system and other power supplies.