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。
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.
作者
荣德生
叶晨
孙瑄瑨
Rong Desheng;Ye Chen;Sun Xuanjin(School of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,China)
出处
《太阳能学报》
北大核心
2025年第7期598-605,共8页
Acta Energiae Solaris Sinica
基金
辽宁省教育厅基础项目(LJKMZ20220683)。
关键词
高增益
耦合电感
电压应力
软开关
二次型
倍压
high gain
coupled inductor
voltage stress
soft switch
quadratic Boost converter
double voltage unit
