STEADY STUDY ON QUASI-Z-SOURCE SOFT-SWITCHING CONVERTER WITH INTEGRATED DOUBLED CIRCUIT

被引：0
|
作者：
Wang F. [1 ]
Zhou M. [1 ]
Cao Y. [1 ]
Wei Z. [1 ]
Ding X. [2 ]
机构：
[1] School of Information and Control Engineering, Qingdao University of Technology, Qingdao
[2] School of Automation, Nanjing University of Information Science & Technology, Nanjing
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 05期
关键词：
efficiency; high voltage gain; photovoltaic power; quasi-Z-source; soft-switching;
D O I：
10.19912/j.0254-0096.tynxb.2021-1423
中图分类号：
学科分类号：
摘要：
A quasi-Z-source soft-switching converter（qZS-SCSS）with integrated doubled circuit is presented. In qZS-SCSS converter，a technique of the synchronous rectifier is applied such that the diode of the impedance network is replaced with an auxiliary switch tube Sa. In this way，not only is conduction loss associated with the diode reduced but also zero-voltage-switching characteristics for main switches are provided. Also，diodes of qZS-SCSS converter are switched under zero-voltage-zero-current-switching condition which extremely reduces their switching and reverse recovery losses. At the same time，the leakage energy of the coupled element is absorbed through the clamp circuit. Converter of the qZS-SCSS has the advantages of continuous input current，common ground between the input and output ends，applicability to voltage gain requirements of photovoltaic power generation systems，high voltage gain and high efficiency. Operating principles of qZS-SCSS along with its steady-state analysis are presented. Finally，a prototype with an output power of 100 W was built to verify the correctness of theoretical analysis. © 2023 Science Press. All rights reserved.
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页码：139 / 145
页数：6
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