Active Power Factor Correction Technology Based on Boost Circuit

Power Factor Correction (PFC) technology is a key means to improve system energy efficiency.This paper conducts a systematic review and analysis of Boost-type active power factor correction technology.Firstly, it sorts out the topological structure and working principle of Boost-type PFC, and expounds its advantages in improving power factor and suppressing harmonics in single-phase AC/DC converters.Subsequently, it focuses on elaborating typical strategies such as average current model control (ACMC), peak current model control (PCMC), and sliding mode control (SMC), analyzes the principles and characteristics of these three strategies, and compares their application scenarios, advantages, and disadvantages.The analysis results show that average current model control performs well in terms of steady-state performance and harmonic suppression, but the controller is relatively complex; peak current model control is simple to implement and has a fast response speed, but its anti-noise capability is weak and the harmonics are slightly higher; sliding mode control has strong robustness and is suitable for complex scenarios, but its design is relatively complex.On this basis, the development trend of Boost-type PFC control strategies is summarized, and suggestions and reference ideas are put forward on how to further improve the accuracy in the future.