并网逆变器虚拟磁链模型预测功率控制研究  

Model Predictive Power Control for Grid-connected Inverter Based on Virtual Flux

作　　者：吴雷 张可可 

机构地区：[1]江南大学轻工过程先进控制教育部重点实验室,江苏无锡214122

出　　处：《电力电子技术》2015年第3期55-57,共3页Power Electronics

基　　金：江苏省产学研创新项目(BY2012069)~~

摘　　要：针对并网逆变器的特点,采用一种虚拟磁链模型预测功率控制的新型控制策略。在α,β坐标系下建立并网逆变器基于虚拟磁链预测功率控制的数学模型。一个采样周期内,选择合适的电压矢量及确定相应电压矢量导通时间进行开关管控制。不仅解决了开关频率不固定问题,且逆变器输出稳态电流总谐波畸变率(THD)小,电流动态响应快。仿真和实验表明,采用虚拟磁链模型预测功率控制取得了预期控制效果。A predictive power control based on virtual flux is proposed for grid-connected inverters.The mathematical model of predictive power control for grid-connected inverters is established in a,~ coordinate frame.In every sam- pling cycle,the appropriate voltage vector and the corresponding conduction time are selected to control IGBT.The control strategy not only solves the problem of unfixed switching frequency, but also achieves the low totally harmonic distortion（THD） of the output steady-state current, fast dynamic response characteristics.The simulation and experimental results show that model predictive power control based on virtual flux obtains the desired goal.

关 键 词：逆变器 虚拟磁链 模型预测 

分 类 号：TM464[电气工程—电器]