电流型有源滤波器指数趋近律滑模变结构控制

Exponential reaching law sliding mode variable structure control for current source APF

针对电流型有源滤波器,研究指数趋近律滑模变结构控制策略,通过调整参数来加速向滑模面的趋近过程,很好地抑制了滑模变结构控制的抖振现象.该方法具有响应速度快、稳定性好和对外界干扰不敏感等特点.将此控制方法和直接电流PWM相结合,使系统的运行特性得到了很大的提高.借助PSCAD仿真软件验证了该控制方法的优越性.

A type of exponential reaching law sliding mode variable structure control strategy for current source APF is studied. The chattering phenomenon of sliding mode variable structure control is reduced by adjusting the parameters to accelerate the sliding mode surface reaching process. The method has the characteristics of rapid response, good stability and insensitivity to outside interference, etc. The control of current source inverter based APF can be implemented by this method combined with direct current PWM to get better system performance. The simulation with PSCAD proves the superiority of the method.