Research on ZVS Phase-Shifted Full-Bridge Broadband Inverter Based on Auxiliary Current Source

Yuezhang Zhao, Quan Xiao, Zihao Zhang, Xueting Zhao and Deyan Lin ()
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Yuezhang Zhao: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Quan Xiao: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Zihao Zhang: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Xueting Zhao: School of Automation, Wuhan University of Technology, Wuhan 430070, China
Deyan Lin: School of Automation, Wuhan University of Technology, Wuhan 430070, China

Energies, 2022, vol. 15, issue 22, 1-20

Abstract: Phase-shifted full-bridge topologies are widely used in medium- and high-power DC/DC converters due to their small size and high switching frequency. However, there are few studies on the application of broadband inverters. In the traditional phase-shift full-bridge inverter with a fully resonant load, the problem of current commutation which leads to hard switching is often encountered, to overcome such an issue, an auxiliary current source network is introduced to realize the zero-voltage turn-on of the lagging bridge arm. The working modes of the converter are analyzed in detail, and the parameters of the auxiliary current source network are designed. The simulation verification is carried out by MATLAB/Simulink in a wide frequency range from 10 kHz to 500 kHz. Finally, an experimental circuit board is designed, and the experimental results show that the topology can achieve soft switching in a frequency range from 10 kHz to 200 kHz and has a certain applicability.

Keywords: auxiliary current source; broadband; phase-shifted full-bridge inverter; zero voltage switch (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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