Research Of Bridgeless PFC Based On One Cycle Control

Power electronic devices are used in industrial, military, high-tech fields widely. It not only gives us great promotion for industrial production and social lives, but also introduce a large number of power system harmonics, results in grid harmonic pollution and affects the power quality. Power Factor Correction (PFC) technology is recognized as a effective way to solving harmonic pollution problem. Therefore, studies with high-performance Power Factor Correcter is important for achieving green power electronics.Firstly, study of the Bridgeless Boost PFC converter, several typical Bridgeless Boost PFC converter circuit topology were analysised, compared. Designed a new and efficient Bridgeless Boost PFC circuit based on One-Cycle Control; In order to enhance the Bridgeless PFC converter applications in High-power occasion, this paper also designed a Bridgeless PFC converter circuit based on interleaved technology.Secondly, the principles of IR1150achieves single-cycle control power factor correction was analysed, the detailed design process of a300W Bridgeless Boost PFC converter parameters was given, in order to ensure stability, Deducing the entire loop gain equation, giving the amplitude-frequency characteristic curve and phase frequency response curve, To verify the feasibility, a simulation model was builded through Matlab software. Then studied the1200W bridgeless PFC converter based on interleaved technology,and builted the two models based on average current control strategy and Duty cycle predictive control.Finally,analysed the simulation circuit and designed the prototype; sampled waveforms and associated data, Both the simulation results and experimental results have proved the feasibility and efficiently of the system.