三相三线制并联型有源电力滤波器的准滑模变结构控制  

The quasi-sliding mode control of the shunt active power filter in three-phase three-wire system

作　　者：张晓[1] 孔令军[1,2] 孙华[1,2] 张课[1,2] 

机构地区：[1]中国矿业大学,江苏徐州221008 [2]江苏省电力传动与自动控制工程技术研究中心,江苏徐州221008

出　　处：《电力系统保护与控制》2011年第21期40-44,共5页Power System Protection and Control

摘　　要：提出一种基于准滑模变结构控制(QSMC)的有源电力滤波器的控制策略,用于减小常规滑模控制中存在的抖动问题。使用的方法是将系统的运动轨迹限制在理想滑动模态的某一领域Δ内,从而实现对滑模控制非线性部分进行处理,保证了在减小了系统的抖动的同时系统又具有较好的鲁棒性。同时分析了该装置的原理及控制方法,并对控制器的存在性,可达性及稳定性进行了分析。仿真结果证明了该控制算法简单,响应速度快,对外界噪声干扰和参数摄动具有鲁棒性等特点,对抖动也具有较好的抑制作用。Based on Quasi-sliding Mode Control （QSMC）, a new control strategy of active power filter （APF） is proposed to reduce the chattering problem with traditional sliding mode control method. The proposed scheme aims to limit the system trajectory to a certain domain A of ideal sliding mode and then realize the processing of the non-linear part in sliding mode control. It can decrease chattering and at the same time guarantee strong robustness in the system. The principle and control method of the corresponding controller are presented respectively. Furthermore, the existence, accessibility and stability of the controller system are analyzed. Simulation results demonstrate that with simplicity and quick response, the control algorithm provides excellent performance in robustness against external noise disturbances and parameter perturbation as well as in jitter suppression.

关 键 词：三相三线制系统 并联型有源电力滤波器 准滑模控制 边界层 鲁棒性 

分 类 号：TN713.8[电子电信—电路与系统] TM714.3[电气工程—电力系统及自动化]