摘要
直流微电网需要DC-DC升压变换器提高输出电压,为分布式发电单元提供公共电压。文章对传统的升压变换器(Conventional Boost Converter,CBC)和二次升压变换器(Quadratic Boost Converter,QBC)进行改进,提出一种新型高增益DC-DC升压变换器。首先,介绍该新型变换器的拓扑结构与工作原理,并对电路参数进行了设计,分析了功率开关的电压应力;然后,从无源元件数量、开关器件间的电压应力等方面,将该变换器与其他拓扑结构进行对比,变换器仅用两个电感、两个电容和两个功率开关,实现电压增益和电流连续输入,且具有二次电压增益高和降低开关器件间电压应力的优点;最后,通过Matlab仿真模型和试验样机,验证了理论分析的正确性。
DC microgrid requires DC-DC boost converter to increase output voltage and provide common voltage for distributed generation units. In this paper, a novel high gain DC-DC converter was proposed. The proposed converter was an improvement over the conventional boost converter(CBC) and quadratic boost converter(QBC). Firstly, this paper introduced the topology and working principle of the new converter. At the same time, it designed the circuit parameters and analyzed the voltage stress of the power switches. Then, the converter is compared with other topologies in terms of the number of passive components, voltage stress across switching devices,etc. The converter only uses two inductors, two capacitors and two power switches to achieve the voltage gain and continuous input current. Furthermore, it has the advantages of quadratic gain and reducing voltage stress across switching devices. Finally, the correctness of the theoretical analysis is verified through the Matlab simulation model and the experimental prototype.
作者
岳舟
刘小荻
姚绍华
周勇
Yue Zhou;Liu Xiaodi;Yao Shaohua;Zhou Yong(College of Energy,Mechanical and Electrical Engineering,Hunan University of Humanities,Science and Technology,Loudi 417000,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2022年第11期1523-1530,共8页
Renewable Energy Resources
基金
国家自然科学基金项目(61702182)
湖南省教育厅优秀青年项目(20B328)
湖南省创新训练项目(S202110553023)。
