基于电流预测的有源滤波器无差拍控制

针对并联型有源滤波器的拓扑结构,本文基于无差拍控制原理,结合线性预测法自适应法提出了一种新的电流预测法。该方法实现了对指令电流的准确预测,解决数字控制给APF产生的延时误差,提高了系统谐波检测的实时性,得到了可靠的参考电压矢量,结合电压空间矢量法实现了谐波电流的实时补偿。最后,在Matlab/Simulink环境中建立了仿真模型,设定了相关参数,仿真结果表明了该预测方法的有效性。

Deadbeat Control of Active Power Filter Based on Current Prediction

According to the topology of shunt active power filter, a novel method of current prediction method is put forward in this paper, based on the principle of deadbeat control, which combines linear prediction and adaptive method. The method realizes the accurate prediction of the command current, and solves the time delay error in APF generated by digital control. As a result, it improves the real-time performance of prediction detection in the system, precision and reliability of the reference voltage vector. Applying SVPWM control method realizes the real-time generation of compensation currents. Finally, build simulation model in the Matlab/Simulink environment, set the relevant parameters. The simulation results prove the validity and effectiveness of the prediction method.