【摘要】 介绍UPQC的结构和工作原理,并提出利用瞬时无功功率理论中的park变换和park反变换,提取出三相不对称畸变电压系统的基波正序电压,再利用能量平衡原理计算出电源参考电流的检测方法.该方法与现有的UPQC检测方法相比,简单易行,实时性好.仿真结果验证了该方法的正确性和有效性.更多还原

【Abstract】 This paper introduces configuration and function of UPQC.This paper also presents an improved detecting method based on instantaneous reactive power theory.In this method,firstly the positive basic frequency voltage is detected from unbalanced and distorted voltage by using park transformation and park inverse transformation,then computes the reference current of source by using energy balance theory.Compared with the existing detection method of UPQC,the proposed method is simple and easy to realize and have good real-time characteristic.The simulation verifies the correctness and validity of the method.更多还原