Bifurcation Suppression of Peak Current Boost PFC Converter

Abstract

In order to analyze the nonlinear bifurcation phenomenon of Boost power factor correction (PFC-Power Factor Correction) converter with DC charging pile front stage peak current control under fast time scale, the control method is added to effectively suppress the bifurcation phenomenon. Firstly, the flicker mapping model of the converter is established, and the intermittent bifurcation and chaos phenomena of the inductance current of the system are reproduced through the numerical simulation results of the model. The control method is added to suppress the bifurcation phenomenon, so that the system is always stable in the single-period state, and the control method of Self-tuning PI control resonance perturbation is adopted. The simulation results show that the system has high PF value and better robustness while effectively suppressing bifurcation and chaos, and the algorithm is easy to implement in engineering applications.