摘要
传统变换器由于拓扑本身结构限制,升压能力有限,需要将多级变换器串联来实现高升压,降低了工作效率及系统容错率.针对该缺点,提出一种交错并联准Z源DC-DC变换器,将交错并联应用于准Z源直流变换器中,集交错并联的扩容、降纹波优点和高电压增益优点于一身.详细研究了变换器的基本工作原理,分析了工作状态,并根据基尔霍夫电压及电流定律,推导了电压增益及器件应力.通过搭建一台38 W的实验样机,验证新型拓扑理论分析的正确性和可行性,结果表明,该变换器在实现高电压增益的同时,极大地减小了电流纹波及电容容值和体积.
Due to the limitations of the topology of the traditional converter,the boosting capability is limited.It is necessary to connect the multi-level converters in series to achieve high boosting,which reduces the working efficiency and system fault tolerance.To solve this shortcoming,this paper proposes an interleaved parallel quasi-Z source DC.-DC converter,which is used in the quasi-Z source DC converter,that combines the advantages of staggered parallel expansion,ripple reduction and high voltage gain.The paper studies the basic working principle of the converter in detail and analyzes the work.Based on the Kirchhoff voltage and current law,the voltage gain and device stress are derived.Finally,a 38 W experimental prototype is built to verify the correctness and feasibility of the new topology theory analysis.The results show that the converter achieves high voltage gain while greatly reducing current ripple,capacitance and volume.
作者
张民
于雷
刘贇
赵德林
李海滨
丁新平
ZHANG Min;YU Lei;LIU Yun;ZHAO Delin;LI Haibin;DING Xinping(School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266520,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2019年第3期269-274,共6页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金（51477079）
关键词
交错并联技术
准Z源逆变器
高电压增益
低电流纹波
低电流应力
interleaved parallel technology
quasi-Z-source inverter
high voltage gain
low current ripple
low current stress
