摘要
为了提升基本Boost变换器的电压增益,降低开关器件电压应力,提出一种基于耦合电感倍压的有源开关电感高增益变换器。变换器中两个耦合电感的原边组成有源开关电感结构,并引入二极管-电容支路作为无源钳位回路用来吸收漏感能量。利用变换器漏感等效电路模型分析了变换器工作模态,采用伏秒积平衡方法推导得到了变换器电压增益,并给出开关管和二极管电压应力。分析表明,两个耦合电感倍压单元可提升变换器的电压增益,耦合电感匝数比越大、耦合度越大,电压增益也越高,开关管的电压应力也越低。实验样机测试结果验证了理论分析的正确性,表明该变换器具有良好的电气性能。
To improve the voltage gain of a basic Boost converter and reduce the voltage stress in the switching devices,an active switching inductor high-voltage gain converter based on coupled inductor voltage doubler is proposed.The pri⁃mary sides of the two coupled inductors in the converter form an active switching inductor structure,and a diode-capaci⁃tor branch is introduced as a passive clamp loop to absorb the leakage inductance energy.By means of the equivalent cir⁃cuit model of converter leakage inductance,the converter’s working modes are analyzed,and its voltage gain is derived using the volt-second product balance method.In addition,the voltage stress in switch tubes and diodes is given.The analysis result indicates that the two coupled inductor voltage doubler units can improve the converter’s voltage gain.A larger coupled inductor turns ratio and a greater coupling degree will lead to a higher voltage gain,while a larger cou⁃pled inductor turns ratio will lead to a lower voltage stress in the switch tube.The test results of an experimental proto⁃type verified the theoretical analysis,showing the converter’s satisfying electrical performance.
作者
李洪珠
魏昕
刘飞扬
张超
刘艳
LI Hongzhu;WEI Xin;LIU Feiyang;ZHANG Chao;LIU Yan(Faculty of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105,China;Fuxin Power Supply Company,State Grid Liaoning Electric Power Supply Co.,Ltd,Fuxin 123000,China;Benxi Power Supply Company,State Grid Liaoning Electric Power Supply Co.,Ltd,Benxi 117000,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2021年第6期7-14,共8页
Proceedings of the CSU-EPSA
作者简介
李洪珠(1974-),男,博士,教授,研究方向为电力电子及磁集成技术。Email:2067711624@qq.com;魏昕(1993-),女,硕士研究生,研究方向为电力电子及磁集成技术。Email:745105054@qq.com;刘飞扬(1995-),男,硕士研究生,研究方向为电力电子及磁集成技术。Email:1282354800@qq.com。
