摘要
为了提高电流跟踪的快速收敛性和准确性,提出采用非奇异终端滑模对三电平有源电力滤波器(active power filter,APF)的指令电流进行跟踪控制.对指令电流的d、q轴分量分别设计非奇异终端滑模面与控制律,使得补偿电流能在有限时间内收敛到指令电流,并从理论上证明了其稳定性.仿真实验验证了该控制方法能有效地抑制电网中的谐波电流,与传统的三角波比较控制和常规滑模变结构控制方法相比,所提出的控制策略具有更好的谐波抑制性能.
To improve the performance of fast convergence and accuracy,a non-singular terminal sliding mode control method is presented for the three-level active power filter to track the command current. Non-singular terminal sliding mode control laws are designed to track the command currents of d、q axis so that the compensation currents can reach the command current in a finite time. The stability of the closed-loop system is also proven. The simulation results show that the harmonic current can be effectively suppressed by the proposed control strategy,and a better harmonic suppression performance can be achieved in comparison with the traditional triangular wave comparison control and common sliding mode control.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2016年第1期15-18,28,共5页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(61473265)
教育部高等学校博士学科点专项科研基金(20124101120001)
关键词
三电平有源电力滤波器
非奇异终端滑模
电流跟踪
指令电流
补偿电流
three-level active power filter
non-singular terminal sliding mode
current tracking
command current
compensation current
