摘要详情

ID / 提交时间

8 / 2023-09-04 14:16:49

标题

Dual-Resonant Step-Up AC/DC Converter Based on Fixed Frequency Pulse Overlapping Modulation

关键字

Dual-resonance-core,switched-capacitor converter,power factor correction,fixed switching frequency,pulse overlapping modulation

主题及专题

2.Power electronic technology and application > (1)、Power converter topologies and design

状态

终稿

作者

Yubo Han / University of Electronic Science and Technology of China

Weihao Hu / University of Electronic Science Technology of China

Di Cao / University of Electronic Science Technology of China

Yiping Yuan / University of Electronic Science Technology of China

Qi Huang / Southwest University of Science and Technology

摘要

To overcome the limitation of voltage regulation in resonant switched capacitor topology and introduce the soft switching characteristics into AC/DC converter, a dual-resonant step-up AC/DC converter based on fixed frequency pulse overlapping modulation is presented in this paper. The voltage regulation is achieved by regulating the overlapping time of the two switching pulses, and the switching frequency can be fixed for simplifying the implementation. The operational principle, voltage gain and power factor correction performance are analyzed in detail. Moreover, a simulation model with 165−265 V_rms input and 400 V/1 kW output is built to verify the above analysis, and a model with closed loop is built to verify the controllability.