One-Cycle Control of single-phase PFC rectifiers with fast dynamic response and low distortion

Based on One-Cycle Control, an improved fast dynamic response single-phase boost power-factor-correction rectifier is proposed in this paper. A load current feedforward loop is in parallel with the output voltage feedback loop, which significantly improves the dynamic response of the converter to load steps. The distortion of the input current is low due to the output ripple offset with an adaptive ripple compensator and low crossover-frequency of the voltage loop. Comparison of the traditional OCC PFC rectifiers and the proposed OCC rectifier is given in details. In the end, the simulations verified the superiority of the proposed control approach.