Single-stage power-factor-correction converter using tapped inductor

This paper proposes a single-stage PFC converter using a tapped inductor. This converter operates in the continuous-conduction mode (CCM), taking the advantage of decreasing the high-frequency current ripple and reducing the size of an EMI input filter. Furthermore, using the leakage inductance in the tapped inductor, the line-current distortion is suppressed and the number of components can be also reduced. The effect of some circuit parameters on the line-current harmonics and the voltage across the energy-storage electrolytic capacitor are examined. In our experiment, the line current complies with the international regulations of IEC61000-3-2 class D. Also, a high efficiency of 87% is obtained for the output of 15 V/6 A.