一种改进的二次型耦合高增益变换器

荣德生; 叶晨; 孙瑄瑨

doi:10.19912/j.0254-0096.tynxb.2024-0326

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (7) : 598-605. DOI: 10.19912/j.0254-0096.tynxb.2024-0326

第二十七届中国科协年会学术论文

一种改进的二次型耦合高增益变换器

荣德生, 叶晨, 孙瑄瑨

作者信息 +

AN IMPROVED QUADRATIC COUPLED HIGH GAIN CONVERTER

Rong Desheng, Ye Chen, Sun Xuanjin

Author information +

文章历史 +

摘要

为有效提高变换器增益,将耦合电感与开关电容结合构成新的倍压单元。在提升增益的同时对开关电容的电流进行抑制,并对耦合电感起到钳位作用,实现部分二极管的软开关;构建双开关管二次型结构,使输入电流连续的同时,又明显减小开关管的电压应力。对所提变换器的不同模态下的运行方式和工作原理进行了详尽的分析和理论推导,给出器件的电压电流波形图,与同类型的变换器对比,凸显了所提变换器高增益低应力的特点。通过构建一台200 W的样机采集波形,验证理论推导与分析。

Abstract

To enhance the converter’s gain effectively, a novel voltage doubling unit is introduced, which combines the coupling inductance with the switching capacitor. This unit not only amplifies the gain but also suppresses the current of the switching capacitor and clamps the coupling inductance, thereby facilitating soft switching of some diodes. A dual-switching-tube quadratic structure is developed to ensure continuous input current while significantly reducing the voltage stress on the switching tubes. The article thoroughly examines the operational modes and working principles of the proposed converter under various conditions and presents the voltage and current waveforms of the device. Compared with converters of the same type, the high gain and low stress characteristics of the proposed converter are prominently exhibited. Experimental validation of the theoretical derivation and analysis is further substantiated through the construction of a 200 W prototype.

导出引用

荣德生, 叶晨, 孙瑄瑨. 一种改进的二次型耦合高增益变换器[J]. 太阳能学报. 2025, 46(7): 598-605 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0326

Rong Desheng, Ye Chen, Sun Xuanjin. AN IMPROVED QUADRATIC COUPLED HIGH GAIN CONVERTER[J]. Acta Energiae Solaris Sinica. 2025, 46(7): 598-605 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0326

中图分类号： TM46

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