Parallel resonant photovoltaic grid-connected system with high step-up ratio

被引：0
|
作者：
Li Z.-J. [1 ]
Xi W.-X. [1 ]
Zhang Z.-K. [1 ]
机构：
[1] School of Control Science and Engineering, Hebei University of Technology, Tianjin
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2019年 / 23卷 / 02期
关键词：
High step-up ratio; LC parallel resonant; Photovoltaic grid-connected system; Two-staged; Zero voltage switching;
D O I：
10.15938/j.emc.2019.02.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to make the two-staged photovoltaic grid-connected system with high step-up ratio and high conversion efficiency, a non-isolated two-staged photovoltaic grid-connected system with high efficiency is proposed. The front system can achieve high voltage-gain using LC parallel resonant tank. Its switches have the features such as zero-voltage-switching (ZVS). The after system is a typical single-phase full bridge inverter connected with the LCL filter circuit, and realize the grid connection. The working principles of two-staged photovoltaic grid-connected system were given. And the circuit parameters were designed. The simulation model of two-staged photovoltaic grid-connected system was built. The simulation was carried out based on the design parameters. Simulation results show that the two-staged resonant step-up photovoltaic grid-connected system is correct, feasible and valid. Compared with the traditional technical scheme, it not only achieves the system with non-isolated and high step-up ratio, but also improves the efficiency of the system. © 2019, Harbin University of Science and Technology Publication. All right reserved.
引用
收藏
页码：105 / 113
页数：8
相关论文
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