一种简单的任意次谐波电流瞬时值检测算法  

A Simple Detection Algorithm for any Harmonic Instantaneous Current

作　　者：应展烽[1] 吴军基[1] 易文俊[1] 

机构地区：[1]南京理工大学动力工程学院,南京210094

出　　处：《微计算机信息》2010年第13期23-25,11,共4页Control & Automation

摘　　要：谐波电流的快速检测是谐波拟制的前提。本文将积分法和改进后的滑动窗法结合,提出了一种简单的检测谐波电流方法。该算法计算量小,精度较高,可在第一个工频周期后,检测任意一次谐波分量瞬时值。若畸变电流信号由稳态发生突变,检测结果延迟在一个工频周期内。在获得畸变电流采样值的情况下,检测过程完全可通过软件实现。算法具有较高的工程应用价值。程序仿真结果,证明了算法的有效性。另外,文中还对采样频率对检测结果的影响进行了分析。The rapid detection of harmonic current is premise of harmonic elimination. A detection algorithm for harmonic current by uniting Integration and Sliding Window is presented. This algorithm has the advantages of less computing effort and high accuracy. The any harmonic instantaneous current can be detected after first primitive period. The delay of detecting result is less than one primitive period All detecting process can he governed by software when distorted current sampling data was obtained. The algorism has high engineering values. Results of program simulation show the validity of the algorithm. In addition, the effect sampling frequency on detecting results has been discussed.

关 键 词：谐波检测 滑动窗 积分法 任意次谐波 

分 类 号：TM930.1[电气工程—电力电子与电力传动]