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为解决四桥臂并联有源电力滤波器(active power filter,APF)现有的空间矢量控制(space vector modulation,SVM)算法计算复杂、延时较大的问题,首先提出一种改进的空间矢量控制方法,详细说明该方法的原理和具体实现,通过仿真计算验证了该方法的正确性和有效性。同时,为使得四桥臂并联APF具有控制精度高和响应速度快的性能,将所提出的改进空间矢量控制和电流滞环控制进行了有效结合,提出一种兼具两种控制方法各自优点的复合控制策略。给出该策略的实现和参数计算方法,通过仿真计算和物理实验验证了所提方法的正确性和有效性。所得方法计算简单,易于硬件实现,对于提高四桥臂并联APF的补偿效果具有一定的应用价值。
In order to solve the complex and time-delay problem of the existing space vector modulation (SVM) algorithm of an active power filter (APF) of a four-legged parallel APF, an improved space vector Control method. The principle and implementation of the method are described in detail. The correctness and effectiveness of the method are verified by simulation. At the same time, in order to make the four-leg parallel APF have the advantages of high control accuracy and fast response, the proposed improved space vector control and current hysteresis control are effectively combined, and a combination of the advantages of the two control methods Compound control strategy. The realization of this strategy and the method of parameter calculation are given. The correctness and effectiveness of the proposed method are verified by simulation and experiments. The obtained method is simple and easy to be implemented in hardware and has certain application value for improving the compensation effect of four-arm parallel APF.