两级三相光伏逆变器并网控制策略研究  

Research on Grid Connected Control Strategy of Two Stage Three Phase Photovoltaic Inverter

作　　者：郭亚楠 王红庆 李红刚 蒋成博 GUO Yanan;WANG Hongqing;LI Honggang;JIANG Chengbo(Pinggao Group Company Limited,Pingdingshan 467000,China)

机构地区：[1]平高集团有限公司,河南平顶山467000

出　　处：《软件导刊》2023年第7期66-70,共5页Software Guide

基　　金：平高集团有限公司科技项目(PGKJ2021-053,PGKJ2020-043)。

摘　　要：为提高三相光伏逆变器的并网效率和并网电流质量,提出一种光伏逆变器并网控制策略。首先建立两级三相电路拓扑结构,通过对电流电压进行派克变换,将静止坐标系下的交流量转化为同步旋转坐标系下的直流量;然后将电网电压定向矢量控制并网逆变器的有功功率与无功功率作用于SVPWM输出脉冲,得到作用于并网逆变器的驱动信号,实现逆变器的并网控制;最后使用MATLAB/Simulink建立仿真模型,验证电路拓扑结构及控制策略的可行性。实验结果表明,该控制策略能稳定跟踪电网电压相位并输出良好的并网电流波形。In order to improve the grid connected efficiency and current quality of three-phase photovoltaic inverter,a grid connected control strategy is proposed.Firstly,a two-stage three-phase circuit topology is established,through the park transform of the current and voltage,the AC quantity in the static coordinate system is transformed into the DC quantity in the synchronous rotating coordinate system,the grid voltage oriented vector control is used to control the active power and reactive power of grid connected inverter,and act on the output pulse of SVPWM to get the driving signal of grid connected inverter,and finally realize the grid connected control of inverter.Finally,the simulation model is es⁃tablished by using MATLAB/simulink to verify the feasibility of the circuit topology and the control strategy,which proves that the control strat⁃egy can stably track the grid voltage phase and output good grid current waveform.

关 键 词：光伏并网 逆变 派克变换 控制策略 

分 类 号：V243.2[航空宇航科学与技术—飞行器设计]