| Title |
Power Factor with Single Power Stage AC/DC Converter Operated in Active-Clamp Mode |
| Authors |
윤신용(Yoon, Shin-Yong) ; 백수현(Baek, Hyun-Soo) ; 김용(Kim, Yong) ; 김철진(Kim, Cherl-Jin) ; 어창진(Eo, Chang-Jin) |
| Keywords |
Single-stage AC/DC converter ; Active clamping circuit ; Boost-flyback converter ; Power factor ; Active |
| Abstract |
This paper presents the single-stage high power factor AC to DC converter operated in active-clamp mode. The proposed converter is added active-clamping circuit to boost-flyback single-stage power factor corrected power supply. The active-clamping circuit limits voltage spikes, recycles the energy trapped in the leakage inductance, and provides a mechanism for achieving soft switching of the electronic switches to reduce the switching loss. The auxiliary switch of active-clamping circuit uses the same control and driver circuit as the main switch to reduce the additional cost and size. To verify the performance of the proposed converter, a 100W converter has been designed. The proposed converter gives good power factor correction, low line current harmonic distortions, and tight output voltage regulation, as used unity power factor. |