一种新型滑模控制的有源电力滤波器

A New Sliding Mode Control for Active Power Filters

以三相三线制有源电力滤波器为研究对象,针对传统滑模控制在保证系统鲁棒性的前提下跟踪误差较大的问题,采用一种滑模控制与反推控制相结合的控制策略。首先建立并联型有源电力滤波器在αβ静止坐标系下的数学模型,然后设计反推滑模控制器,最后对其进行仿真和实验研究。仿真实验结果表明,反推滑模控制不仅使系统具有良好的鲁棒性而且有效地改善了跟踪误差。

Based on the active power filter of three-phase three-wire systems, aiming at the problems of large tracking error in the conventional sliding control in the premise of guaranteeing the robustness of the system, the sliding mode control strategy and backstepping technique combining is adopted. Firstly the mathematical model of shunt active power filters is established in αβ static coordinate,and then the back-stepping sliding mode controller is designed. Finally the emulational and experimental study is conducted. The emulational and experimental results show that the back-stepping sliding mode control can achieve good robustness and improve the tracking error effectively.