An isolated bridgeless AC-DC PFC converter using a LC resonant voltage doubler rectifier

作者：Lee Sin woo; Do Hyun Lark^*

来源：International Journal of Electronics, 2016, 103(12): 2125-2139.

DOI：10.1080/00207217.2016.1178344

• Bridgeless converter
• power factor correction
• resonant converter
• zero-current switching

This paper proposed an isolated bridgeless AC-DC power factor correction (PFC) converter using a LC resonant voltage doubler rectifier. The proposed converter is based on isolated conventional single-ended primary inductance converter (SEPIC) PFC converter. The conduction loss of rectification is reduced than a conventional one because the proposed converter is designed to eliminate a full-bridge rectifier at an input stage. Moreover, for zero-current switching (ZCS) operation and low voltage stresses of output diodes, the secondary of the proposed converter is designed as voltage doubler with a LC resonant tank. Additionally, an input-output electrical isolation is provided for safety standard. In conclusion, high power factor is achieved and efficiency is improved. The operational principles, steady-state analysis and design equations of the proposed converter are described in detail. Experimental results from a 60W prototype at a constant switching frequency 100 kHz are presented to verify the performance of the proposed converter.

• 出版日期2016-12