无功补偿单相双向高频环节逆变器的设计  

The Design for a Single Phase Two-way High Frequency Link Inverter with Reactive Compensation

作　　者：王朔[1] WANG Shuo(Zhejiang Post and Telecommunication College,Shaoxing 312000,China)

机构地区：[1]浙江邮电职业技术学院,浙江绍兴312000

出　　处：《山东农业大学学报（自然科学版）》2021年第2期293-298,共6页Journal of Shandong Agricultural University：Natural Science Edition

摘　　要：针对传统光伏并网逆变器的不足,本文提出了一种基于推挽拓扑结构的单相双向隔离型高频环节光伏并网逆变器。由光伏电池板阵列、直流母线中的电容滤波器、推挽变换器、高频变压器、循环换流器以及用于与电网耦合的电感组成。通过双向功率流配置,该逆变器能够从光伏阵列同时注入有功功率和补偿无功功率,并实现了光伏阵列和电网之间的隔离。此外,采用开关等效摸型,推导出了逆变器对应的调制方案,并对元件尺寸进行分析。仿真结果验证了提出逆变器设计的可行性,能够同时进行光伏并网与无功补偿,具有成本低、功率密度高的优点。In view of the shortcomings of traditional photovoltaic grid-connected inverter,a bi-directional isolated high-frequency link photovoltaic grid-connected inverter based on push-pull topology is proposed.It consists of photovoltaic panel array,capacitive filter in DC bus,push-pull converter,high frequency transformer,circulating converter and inductor for coupling with power grid.Through the bi-directional power flow configuration,the inverter can inject active power and compensate reactive power from the photovoltaic array at the same time,and realize the isolation between the photovoltaic array and the power grid.In addition,the corresponding modulation scheme of the inverter is deduced by using the switch equivalent model.And the size of the component is analyzed.The simulation results verify the feasibility of the proposed inverter design,which can carry out photovoltaic grid connection and reactive power compensation at the same time,and has the advantages of low cost and high power density.

关 键 词：逆变器 设计 

分 类 号：TM464[电气工程—电器]