Research of the Single-switch Active Power Factor Correction for the Electric Vehicle Charging System

Face to energy crisis and increasingly severe pressure on environmental pollution, electric vehicles have become the new direction of the vehicles. In order to meet the electric vehicle's charging requirements for high power factor (PF), this paper intends to implement single- switch active power factor correction (APFC) function under the control of voltage, current dual closed-loop in Inductor current “continuous conduction mode” (CCM). The article uses saber software to simulate with the single-phase and three-phase PFC system and finally develops a 3KW experiment prototype. The results of the power experiment validate the feasibility of the method. The power factor can be improved to nearly 1 and it has good application value in actual project.