摘要
为了实现三相电网电压的快速准确同步,分析了基于多级联式交叉解耦复系数滤波器的锁相环,针对其结构复杂以及计算量的大的缺点,提出了一种基于快速重复控制内模的改进型复系数锁相环。分析了数字实现带来的问题,并提出了基于分数阶快速重复内模的实现方法,可以准确地分离出电网电压基波正序分量,最后通过仿真验证了方法的有效性。
Aiming at fast accurate synchronization of three-phase grid voltage,this paper analyzed the phase-locked loop based on the multiple-stage paralleled complex coefficients filter with cross decoupling. In view of its complicated structure and heavy calculation burden,this paper proposed an improved complex coefficient phase-locked loop based on a fast repetitive internal model. It analyzed problems caused by digital implementation,and suggested an implementation method based on fast repetitive internal model of a fractural order.The proposed scheme could accurately extract the positive sequence component of the fundamental wave of the grid voltage. Finally,the effectiveness of the method was verified through simulation.
作者
徐鹏
陈国柱
Xu Peng;Chen Guozhu(College of Electrical Engineering, Zhejiang University, Hangzhou Zhejiang 310027, China)
出处
《电气自动化》
2019年第1期94-98,共5页
Electrical Automation
关键词
快速重复内模
复系数滤波器
分数阶
数字化
锁相环
fast repetitive internal model
complex coefficient filter
fractional order
digitalization
phase-locked loop