基于PLECS的三相并网光伏逆变器仿真研究  

Simulation Study on Three-phase Grid-connected Photovoltaic Inverter with PLECS

作　　者：陶云峰 TAO Yun-feng(College of Electrical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《电气开关》2018年第3期61-63,共3页Electric Switchgear

摘　　要：本文对一种三相光伏并网逆变器进行了仿真实验研究。在研究过程中,本文将该逆变器前级MPPT控制的DC/DC稳压环节视为一个理想电压源来降低研究难度。该逆变器的主电路采用基于SVPWM技术的三相全桥拓扑结构,并采用dq域中基于PI控制的单电流控制策略,最后利用电力电子仿真软件PLECS作为仿真平台对所研究的逆变器进行了仿真实验。仿真实验结果表明,该三相光伏逆变器拥有较为优异的电流输出控制能力,并能够稳定的进行并网运行,证明了该模型的正确性与可行性。A simulation research of three-phase grid-connected photovoltaic inverter is presented in this paper. Over the course of this study,the front-stage DC/DC link based on MPPT control is simplified as an ideal voltage source to reduce difficulty of study. The main circuit of this inverter is a three-phase full-bridge topology using single current control strategy based on PI control in dq domain. Afterward,the simulation software,PLECS,is employed as the platform to proceed the simulation experiment of this inverter. The simulation results exhibit that the inverter has an excellent capacity to control inverter output current and operate steadily in the grid-connected mode,which proves the validity and feasibility of this model.

关 键 词：三相光伏并网逆变器 SVPWM PI控制 PLECS 

分 类 号：TM464[电气工程—电器]