一种新的畸变电流检测方法及其实现  

A NOVEL METHOD FOR HARMONIC CURRENT DETECTION AND ITS REALIZATION

作　　者：易仕军 孙云莲[2] 陈允平[2] 

机构地区：[1]深圳供电局规划设计院,广东省深圳市518001 [2]武汉水利电力大学,湖北省武汉市430072

出　　处：《电网技术》2000年第8期44-47,52,共5页Power System Technology

摘　　要：根据有源滤波器中畸变电流检测的特点 ,提出了一种基于傅里叶级数分解的递推傅里叶级数算法的畸变电流检测方法。采用双 CPU来构成整个检测系统 ,利用双 CPU的并行工作来提高检测速度 ,以满足实时性的要求。理论推导和实验分析表明 ,采用该检测方法的单片机检测电路具有较高的检测精度和较快的速度 ,能够满足有源滤波器的要求。最后 。According to the characteristics of harmonic detection in APF and based on the resolution of Fourier series, an iterative Fourier series algorithm is put forward for the detection of distorted currents. The whole detecting system consists of two single chip microcomputers which work in parallel mode to increase the detection speed, therefore, the real time detection can be realized. The results from theoretical derivation and experimental analysis show that this single chip computer based detecting system is of higher detection accuracy and faster detection speed, so it can meet the need of detecting harmonics in APF. Finally, the further research direction and the improvement measures of the system are given.

关 键 词：畸变电流 检测 有源滤波器 CPU 单片机 

分 类 号：TM933.1[电气工程—电力电子与电力传动]