递推积分滑模变结构控制在有源电力滤波器中的应用

Application of Recursive Integral Sliding Mode Variable Structure Control in Active Power Filter

对于滑模变结构控制不能完全消除稳态误差的情况,提出一种基于离散信号迭代运算的递推积分控制算法,并将该算法与滑模变结构控制结合形成多重变结构控制,将该控制策略应用在并联型有源电力滤波器中。利用Matlab进行仿真研究,结果表明:基于该控制策略的有源滤波器可以有效滤除谐波,减小跟踪误差,具有可行性。

Considering the fact that sliding mode variable structure control fails to completely eliminate the steady-state error,a recursive integral control algorithm based on discrete signal iterative operation was proposed and was combined with sliding mode variable structure control to form a multiple variable structure control,including having this control strategy applied to parallel active power filter.Simulation research with Matlab shows that,the active power filter based on this control strategy can effectively filter out harmonics and reduce tracking error along with feasibility.