基于电压矢量滞环控制D-STATCOM补偿不平衡负载的控制策略

为了提高D-STATCOM补偿不平衡负载的性能,采用一种基于电压空间矢量的滞环电流控制方法,该方法利用电流误差矢量与参考电压矢量的空间分布,根据控制规则,得出最优控制电压矢量,使电流误差控制在滞环宽度以内,采用空间电压矢量消除相间影响。在降低开关频率的条件下,既有较好的电流响应速度,又能有效限制电流误差,且控制简单,运算量小,易于DSP实现。仿真结果证明了该方法的正确性和可行性。

Control strategy of D-STATCOM compensating unbalanced load based on hysteresis control of voltage vector

In order to improve performances of D-STATCOM compensating unbalanced load, one kind of current control method based on hysteresis voltage space vector is introduced. The method using spatial distribution of current error vector and the reference voltage vector to obtain optimal control voltage vector according to control rules, and makes the current error control within the hysteresis width, the space vector is adopted to eliminate interphase effects. In the conditions of reducing the switching frequency, ...