基于电压空间矢量的有源电力滤波器双滞环电流控制方法

为提高有源电力滤波器的补偿精度,提出一种基于电压空间矢量的有源电力滤波器双滞环电流控制方法.该方法利用电流误差矢量与参考电压矢量的空间分布给出最佳电压矢量输出,控制电流误差在滞环带内;双滞环的引入,保证了系统暂态过程中的响应速度,同时也具有较好的稳态跟踪能力,可有效限制电流误差.同时还提出了一种扇区判定和参考电压求解的优化算法,与其他电流控制方法相比,该控制方法提高了电压利用率,也显著降低了开关频率,在Pspice软件环境下的仿真结果证明了其良好的动静态性能.

A Novel of Double Hysteresis Current Control Method for Active Power Filter Based on Voltage Space Vector

In order to improve the current tracking performance of active power filter,a novel of double hysteresis current control method based on voltage space vector is proposed. This method gives the best switching of voltage vector using the space distribution of current error vector and reference voltage vector,and then controls the current below the hysteresis width. The double hysteresis ensures a fast current response,and has an ascendant steady-state performance,which can limit the current error efficiently....