有源电力滤波器精确反馈线性化准滑模变结构控制  

Quasi-sliding Mode Control of Active Power Filters Based on Exact Feedback Linearization

作　　者：杨龙月[1] 刘建华[1] 王崇林[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏省徐州市220008

出　　处：《中国电机工程学报》2014年第33期5868-5875,共8页Proceedings of the CSEE

摘　　要：提出一种基于精确反馈线性化的有源电力滤波器(active power filter,APF)准滑模变结构复合控制策略,解决了传统有源电力滤波器滑模控制器设计结构复杂及抖振问题。根据三相有源电力滤波器在d-q坐标系下的仿射非线性模型,推导相应的坐标变换矩阵与状态反馈表达式,得到系统精确反馈线性化模型。针对此线性系统设计积分滑模函数,并证明等效控制的存在性与滑模控制的可达性。最终实现了准滑模变结构控制器设计,并给出参数选取范围。仿真与实验结果证明,该复合控制方法结合了精确反馈线性化控制与滑模控制的优点,具有较优的动态控制响应与稳态控制性能。In order to reduce the design and structure complexity and chattering of the traditional sliding mode controller, a compound control method combining exact feedback linearization and quasi-sliding mode variable structure control was proposed and applied into active power filters（APF）. On the basis of the affine nonlinear model of three-phase shunt APF in the synchronous d-q frame, the nonlinear coordinate change matrix and the state variable feedback equations were derived, and then an exact feedback linearization model was constructed. An integral sliding mode function was designed in terms of linear systems, and the existence of equivalent control and accessibility of sliding mode control were proved. Finally the quasi-sliding mode controller was constructed and the range of parameters was determined. The results of simulations and experiments show that this compound control has the advantages of both exact feedback linearization and sliding mode control. This method has flexible dynamic control response and excellent stable control performance with chattering suppression.

关 键 词：有源电力滤波器 精确反馈线性化 准滑模变结构控制 抖振 

分 类 号：TM46[电气工程—电器]