Abstract
A new isolated bridgeless PFC converter based on active-clamped SEPIC is proposed. Compared to conventional active-clamped SEPIC PFC converter, the proposed converter reduces conduction loss by removing two diodes in the line current path, while preserving the advantages of the active-clamped SEPIC such as zero-voltage switching (ZVS) and active voltage clamp for all the high frequency switches, soft turn-off of the out-put diodes and well damped control-to-input-current response. In addition, the peak voltage stress on the output diode is inherently clamped by the center-tapped transformer configuration. Experimental results from a 3.3 kW prototype verified the operation of the converter and demonstrated peak efficiency of 97.26% with 140 kHz switching frequency. The power density of the single-phase PFC module is 101 W/in3.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 239-250 |
| Number of pages | 12 |
| Journal | CPSS Transactions on Power Electronics and Applications |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 1 2022 |
Keywords
- Active-clamped SEPIC
- bridgeless PFC
- totem-pole PFC
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Renewable Energy, Sustainability and the Environment
- Control and Systems Engineering