论文部分内容阅读
针对并联型有源电力滤波器拓扑结构提出了一种改进无差拍控制方法,在传统的无差拍控制方法的基础上,令有源电力滤波器一个开关周期内的平均值跟踪参考,经过计算得到下一个周期的开关占空比。该方法具有计算简单、延时小、对参考电流突变有较好跟踪效果和输出电流纹波小等优点,并可以有效补偿由于中性点隔离对控制性能的影响。文中给出了详细的理论分析,并设计制作了一套三相三线制并联有源滤波器实验装置,实验结果验证了所提出控制方法的可行性和有效性。
An improved no-beat control method is proposed for the topology of shunt active power filter. Based on the conventional deadbeat control method, the average value of the active power filter in a switching cycle is tracked and referenced Calculate the switch duty cycle for the next cycle. The method has the advantages of simple calculation, small delay time, good tracking effect on the reference current sudden change and small output current ripple, and can effectively compensate the influence of the neutral point isolation on the control performance. The paper gives a detailed theoretical analysis and designs a set of three-phase three-wire shunt active filter experimental device, the experimental results verify the feasibility and effectiveness of the proposed control method.