并联有源电力滤波器的复合电流控制策略

为提高并联型有源电力滤波器的电流跟踪性能并降低开关频率,提出一种基于电压空间矢量的双滞环电流复合控制方法。利用电流误差矢量与参考电压矢量的空间分布给出最佳的逆变器输出电压矢量切换,使补偿电流误差控制在滞环宽度以内。采用电压空间矢量消除相间影响,提高电压利用率,其实现简单,无需复杂的矢量变换。仿真实验结果表明该方法动态响应快、开关次数少、能够很好抑制电网谐波电流。

Compound Current Control Strategy for Shunt Active Power Filter

In order to improve the current tracking performance of shunt active power filter and reduce the switch frequency,a compound double hysteresis current control method based on voltage space vector is proposed.This method used the space distribution of current error vector and reference voltage vector to choose the most suitable switching of voltage vector so that the compensatory current error was below the hysteresis width.Voltage space vector was introduced into the control system to eliminate the phase in...