摘要
随着分布式新能源发电技术应用的日益发展,旨在提高新能源利用效率和安全性的未来可再生电能传输和管理系统——FREEDM孕育而生。以FREEDM系统的先进理念为背景,提出一种适合我国配电网络的能源微网架构;研究该微网架构的核心设备固态变压器(SST),包括其拓扑结构、数学模型及矢量控制策略;为了克服传统电感电流反馈控制对非线性负载谐波控制的劣势,逆变器级采用了基于有源谐波注入的电感电流反馈控制。MATLAB仿真实验表明,有源谐波注入电感电流反馈控制的引入有效地改善了系统波动特性,限制了电流超调和系统谐波,该控制方法的引入提高了系统应对负载变化的鲁棒性,改善了逆变器侧的谐波率。
Based on advanced concepts of the FREEDM system,an energy micro-network architecture to suit the network of Chi- na＇s electric power network is put forward in this paper.The research mainly focus on the study of core equipment solid state transformer architecture of the micro-network,including its topology,mathematical model and vector control strategy.In order to overcome the disadvantage of the traditional inductor current feedback control of nonlinear load,the paper propos- es the inductor current feedback control based on the injection of active harmonic on inverter stage.
出处
《工业控制计算机》
2013年第4期139-142,共4页
Industrial Control Computer
关键词
微网
矢量控制
固态变压器
有源谐波
micro-grid,vector control,solid state transformer,active harmonic
