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提出了一种新的基于最优电压矢量的有源滤波器滞环电流控制方法。该方法的特点是用一组滞环相间电流比较器和一组阶梯式相间电流比较器相结合，快速、正确地判断有源滤波器参考电压空间矢量所在的区域，并由此决定最优电压矢量及对有源滤波器实行滞环电流控制。用电磁暂态程序进行的计算机仿真结果表明，该方法能快速、正确地确定最优电压矢量，从而可有效地降低开关频率和提高有源滤波器的效率。其突出优点是在参考电压空间矢量变化较快且难以预测的情况下，仍能快速跟踪及确定其所在的区域，从而可有效地减少电流补偿误差，改善有源滤波器的性能。
A new hysteresis current control method based on optimal voltage vector is proposed. The method is characterized by a combination of a series of hysteresis current phase comparators and a set of stepped phase current comparators to quickly and correctly determine the area where the reference voltage space vector of the active filter is located and to determine the optimum voltage Vector and implementation of active filter hysteresis current control. Computer simulation results using electromagnetic transient program show that this method can determine the optimal voltage vector quickly and correctly, which can effectively reduce the switching frequency and improve the efficiency of the active filter. The outstanding advantage is that the reference voltage space vector changes rapidly and unpredictably, it can still quickly track and determine its area, which can effectively reduce the current compensation error and improve the performance of the active filter.