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[1]李志军,奚文霞,张仔坤.并联谐振型高升压比光伏并网系统[J].电机与控制学报,2019,23(03):105-113.[doi:10.15938/j.emc.2019.02.014]
 LI Zhi-jun,XI Wen-xia,ZHANG Zi-kun.Parallel resonant photovoltaic grid-connected system with high step-up ratio[J].,2019,23(03):105-113.[doi:10.15938/j.emc.2019.02.014]
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并联谐振型高升压比光伏并网系统
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
23
期数:
2019年03
页码:
105-113
栏目:
出版日期:
2019-03-15

文章信息/Info

Title:
Parallel resonant photovoltaic grid-connected system with high step-up ratio
作者:
 李志军 奚文霞 张仔坤
 ( 河北工业大学控制科学与工程学院,天津300130)
Author(s):
 LI Zhi-jun XI Wen-xia ZHANG Zi-kun
 ( School of Control Science and Engineering,Hebei University of Technology,Tianjin 300130,China)
关键词:
两级式 光伏并网系统 并联谐振 高升压比 零电压开关
Keywords:
 two-staged photovoltaic grid-connected system LC parallel resonant high step-up ratio zero voltage switching
分类号:
TM 615
DOI:
10.15938/j.emc.2019.02.014
文献标志码:
A
摘要:
为了使光伏并网系统具有高升压比的同时具备高转换效率,提出了一种非隔离高效两级式并网系统。该系统前级采用电感电容( LC) 并联谐振网络产生高电压增益,其开关器件实现了零电压开关( ZVS) ; 后级为典型的单相全桥逆变电路经过LCL 滤波后实现并网。阐述了两级式光伏并网系统的工作原理,设计了电路参数; 搭建了两级式光伏并网系统仿真模型并基于设计参数进行了仿真验证。仿真实验结果表明,所提出的两极式谐振升压光伏并网系统技术方案切实可行,较之于传统技术方案,实现了非隔离式高升压比,提高了系统工作效率。
Abstract:
 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 singlephase 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.

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备注/Memo

备注/Memo:
收稿日期: 2017 - 05 - 23
基金项目: 河北省科技支撑计划项目“智能电网中的若干关键技术研究”( 15212105D)
作者简介: 李志军( 1964—) ,男,博士,教授级高级工程师,研究方向为绿色能源转换及控制;
奚文霞( 1991—) ,女,硕士研究生,研究方向为新型逆变器拓扑结构及控制方法;
张仔坤( 1992—) ,女,硕士研究生,研究方向为新能源发电及并网技术。
通信作者: 奚文霞
更新日期/Last Update: 2019-03-27