基于自适应谱线增强器预测的有源电力滤波器无差拍控制方法

为了克服有源滤波器控制中由于A/D采样、数据处理等环节带来的延时,提高控制的实时性,采用一种基于自适应谱线增强器（ALE）预测的有源滤波器无差拍控制方式。通过两次ALE预测得到两拍以后的指令电流参考值,进而由无差拍控制得出逆变器的输出电压,经SVPWM调制后给出IGBT驱动信号,从而实现补偿电流无差拍的跟踪指令电流。理论推导证明了所采用预测算法的鲁棒性在H∞意义上是最优的,仿真和试验验证了该方法的正确性和可行性。

Active Power Filter Deadbeat Control Method Based on Prediction of Adaptive Line Enhancer

In order to overcome the current track delay in active power filter control caused by A /D sampling,data processing and other reasons and improve the real-time ability of system,a deadbeat control method for active power filter based on the prediction of ALE was proposed. ALE method was used twice to predict the instruction current which is two steps after current moment,then the output voltage of inverter was obtained by deadbeat control and the signal to drive IGBT was given by SVPWM modulation. So the instruction current was deadbeat tracked by compensation current. The robustness of the algorithm was proved to be optimal in H∞by theory. The simulation and experimental results show that the method is correct and feasible.