基于电流重构技术的直接功率控制并网逆变器

提出一种基于电流重构技术的无交流电流传感器直接功率控制并网逆变器.在分析SVPWM控制的不同电压矢量情况下母线电流与三相逆变电流对应关系的基础上.通过引入一种改进的电压矢量作用算法,实现了全区域的逆变电流重构,并结合直接功率控制策略搭建了系统实验平台.实验结果证明了所提出方法及系统的正确性与可行性.

Direct Power controlled Grid-connected Inverter based on Current Reconstruction Technique

A direct power controlled grid-connected inverter without AC current sensor based on current reconstruction technique is proposed.Based on analyzing the relationship between DC-bus current and three phase inverting currents with SVPWM control,through introducing an improved algorithm of voltage vectors operation,the current reconstruction in whole region is realized.Combined with the direct power control strategy,the system experimental platform is developed,the experimental results prove the accuracy and v...