小型光伏发电站逆变器的设计及其性能研究

On Design of Small Photovoltaic Power Station Inverter

逆变器决定着光伏电站的并网性能,光伏逆变器分为单级和多级两种,其类型都是非隔离的逆变器结构.设计通过建立光伏电池的工程用数学模型和仿真模型,分析电池仿真曲线结果,并以两级式非隔离型光伏逆变器(三相)为研究基础完成逆变器设计,同时根据电路和搭建出的模型,仿真出设计结果.为了使光伏发电系统有效持续工作,设计出了与本系统非常吻合的储能装置.在此基础上,将前面搭建的所有仿真模块进行Simulink组建和并网性能测试,分析整个系统的并网性能.设计可应用于中小型光伏电站发电系统中,并实现顺利并网.

There are two types of PV inverters,single inverter and multiple inverters,and they both are of non-isolated structure.By setting up the mathematical and simulation model of the photovoltaic battery,the battery simulation result is analyzed,the inverter is designed based on two-stage non-isolated photovoltaic inverter（three-phase）and the result of the design is stimulated according to the circuit and the model.Finally,the design analyzes the grid performance of the whole system by the formation and grid performance test of all the simulation modules,and it can be applied to the medium and small scale photovoltaic power generation system to achieve a smooth grid.