摘要
针对风电系统、太阳能发电等清洁能源系统中输出电压低、波动大的不足,提出了一种新型准Z源(Quasi-Z)直流变换器,将开关电感、准Z源单元与SEPIC电路改进组合而成。在研究了新型Quasi-Z源直流变换器拓扑模型的基础上,进一步介绍并分析了变换器的工作原理以及详细推导电压增益,并进行了电感、电容的参数计算,然后通过仿真平台搭建了几种变换器的增益数学模型,以及新型DC/DC变换系统模型,验证了理论分析的正确性,且与其他几种调压电路增益进行比较,结果表明,新型准Z源的DC/DC直流变换器在低占空比下具有更高的增益比。
Aiming at the shortcomings of low output voltage and large fluctuation in clean energy systems such as wind power system and solar power generation system,a new Quasi-Z-source DC-DC converter is proposed.The switching inductor,quasi-Z-source unit and SEPIC circuit are improved and combined.Based on the analysis of the topology structure of the new quasi-Z-source DC-DC converter,a novel quasi-Z-source DC-DC converter is proposed.Furthermore,the working principle of the converter and the detailed derivation of voltage gain are introduced and studied,and the parameters of inductance and capacitance are calculated.Then,the gain mathematical models of several converters and the new DC/DC converter system model are built on the simulation platform.The correctness of the theoretical analysis is verified.The gain of other voltage regulating circuits is compared,the new quasi-Z-source DC/DC converter has higher gain ratio.
作者
雷适
郭小定
韦文祥
陈驰
Lei Shi;Guo Xiaoding;Wei Wenxiang;Chen Chi(School of Information and Electrical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)
出处
《国外电子测量技术》
2020年第11期61-65,共5页
Foreign Electronic Measurement Technology
基金
湖南省教育厅重点项目(18A195)资助。
