摘要
不同容量的逆变器并联需要按容量比例分配功率。实现逆变器无线并联的关键是下垂控制。这里设计等效输出阻抗为阻性,推导出了并联逆变器的有功和无功按容量比例分配的条件。此外采用自适应带通滤波器减小了部分低频谐波频率处的虚拟阻抗以保证带非线性负载时输出电压的总谐波畸变率(THD)较小。仿真与实验验证了理论分析的正确性与有效性。
Inverters with different capacity need to proportionally distribute the power.The key of wireless parallel technology is the droop control.This paper design the virtual resistance to be resistive,and deduce the conditions of proportionally distributing the active power and reactive power.In addition,the band-pass filter is used to decrease the virtual impedance at some low harmonic frequency so that the total harmonic distortion（THD） of the output voltage can keep smaller under rectifier load.Simulation and experimental results verify the correctness and effectiveness of the above theoretical analysis.
出处
《电力电子技术》
CSCD
北大核心
2016年第1期49-52,共4页
Power Electronics
基金
国家自然科学基金(61463037)
江西省教育厅科技项目(GJJ14531)~~
