针对传统准Z源阻抗网络DC-DC升压变换器存在电压增益低和元件电压应力高的问题,提出一种新型准Z源高增益DC-DC升压变换器（HSQZSC）。首先,分析HSQZSC变换器两种模态工作原理,并对其进行稳态分析和参数设计。其次,与现已提出的Z源变换器进行性能对比,表明HSQZSC变换器具有高电压增益和元件电压应力低的优势。然后,对其建立状态空间模型进行小信号分析、稳定性分析和控制器的设计。最后,搭建100 W实物样机,实验结果验证了HSQZSC变换器的可行性与有效性。
Abstract
A novel high step-up quasi-Z-source DC-DC boost converter （HSQZSC） is proposed in the article to address the shortcomings of low voltage gain and high component voltage stress in traditional quasi-Z-source impedance network DC-DC boost converters. Firstly, the working principles of the two modes of operation of the HSQZSC converter are analyzed, and their steady-state analysis and parameter design are conducted. Secondly, a performance comparison with the proposed Z-source converter shows that the HSQZSC converter has the advantages of high voltage gain and low component voltage stress. Then, a state-space model is established for small-signal analysis, stability analysis, and controller design. Finally, a 100 W physical prototype is built, and experimental results verify the feasibility and effectiveness of the HSQZSC converter.
关键词
光伏发电 /
DC-DC变换器 /
拓扑 /
准Z源 /
高增益
Key words
PV power generation /
DC-DC converters /
topology /
quasi-Z-source /
high gain
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基金
国家自然科学基金（U1804143）; 河南省科技攻关项目(242102241027); 河南省高等学校重点科研项目（24A470006）
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