摘要
对微网逆变器虚拟同步机控制及并离网模式切换进行研究。首先,建立了微网逆变器的虚拟同步机模型,并设计了基本的虚拟调速器和虚拟励磁调节器。其次,针对微网两种运行模式确定控制器的输入参考值,并设计了预并列单元,给出了微网在两种模式下切换的总控制框图。最后,在Matlab中建立简单的微网仿真模型并依托微电网实验平台进行相关实验,仿真和实验结果共同验证了所提控制策略的有效性。
Microgrid inverter with virtual synchronous generator(VSG)control and smooth transfer between grid-tied and islanded operation modes were researched. Firstly,the model of microgrid inverter with VSG control was built and the basic virtual speed controller and virtual excitation regulator were designed. Then,set the input reference of the controllers according to the two kinds of operation mode and designed the presynchronization unit and gave the overall control diagram for the switch of two kinds of operation mode of microgrid. Finally,a simple microgrid simulation model was built on matlab and relevant experiment was done on a microgrid experimental platform. Both simulation and experimental results verify the effectiveness of the proposed strategies.
出处
《电气传动》
北大核心
2016年第1期50-54,共5页
Electric Drive
基金
广东省引进创新科研团队计划资助(2011N015)
关键词
微网
虚拟同步机
模式切换
调速器
励磁调节器
预并列
microgrid
virtual synchronous generator(VSG)
mode transfer
speed controller
excitation regulator
presynchronization
