摘要
提出一种基于电网线电压空间矢量的三相光伏并网逆变器解耦方法,将复平面分为6个扇区,在每个扇区内实现两相开关解耦,分别控制相应的输出线电流,实现电流跟踪,改善并网电流波形。最后,利用MATLAB建立三相光伏并网逆变器双环系统仿真模型,仿真结果证明了该方法的有效性。
A new decoupling method based on grid line voltage space vector of three-phase photovoltaic grid-connected in- verter is provided in which the complex plane is divided into six sectors and two-phase switches in each sector are decou- pied and used to control the corresponding line voltage independently. Thus the output current waveforms are improved, and the control accuracy is raised. The simulation model for the two loop system of three-phase photovoltaic grid-connect- ed inverter based on MATLAB has built, and the simulation result shown that the new decoupling method based on grid line voltage space vector is efficient in Photovohaic Grid-connected Inverter.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2010年第1期72-78,共7页
Acta Energiae Solaris Sinica
基金
湖南省自然科学基金(08JJ6029)
全国工程硕士课题(GJW0701)
关键词
空间矢量
滞环电流控制
三相光伏并网逆变器
解耦
仿真
space vector
hysteresis current control algorithm
three-phase photovoltaic grid-connected inverter
decou- piing
simulation
