摘要
本文针对逆变器并联系统,分析了基于功率下垂特性的逆变器并联控制的基本原理以及微网中并联逆变器的环流现象。针对传统下垂控制系统应用于微电网的局限性,提出了一种基于虚拟阻抗的改进下垂控制算法,并应用仿真验证了改进算法的有效性。
This paper focuses on the inverter parallel system and analyzes the basic principles of the parallel control of inverters based on the power droop features and the circulation phenomenon of parallel inverters in micro network.To solve the limitation of the application of the traditional droop control system in micro grid, the paper proposes an improved droop control algorithm based on virtual impedance and verifies the effectiveness of the improved algorithm through applying emulation.
出处
《国网技术学院学报》
2015年第3期11-16,共6页
Journal of State Grid Technology College
关键词
微电网
逆变器
下垂控制
环流
虚拟阻抗
micro grid
inverter
droop control
circulation
virtual impedance
