简化DFT滑窗迭代算法在有源电力滤波器谐波检测中应用  

Application of simplified DFT based sliding-window iterative algorithm in APF harmonic detection

作　　者：成剑[1] 罗安[2] 付青[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电力自动化设备》2005年第5期57-60,共4页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(60474041)

摘　　要：介绍了一种在有源滤波控制器应用中基于简化离散傅里叶变换的谐波电流检测技术的设计和应用。检测中非线性负载产生的谐波电流成分,运算过程中应用了滑窗迭代算法,它能有效地提高系统的实时性、目标跟随特性和抗干扰性,并且具有计算量小、容易工程实现的特点。进行了滑窗迭代算法的Matlab仿真试验,结果表明该算法能准确计算出负载电流中的基波成分,误差小,实时性强,能满足实际应用需要。The design and implementation of a harmonic current computation technique is presented, which is used in active power filter based on a simplified discrete Fourier transform. A sliding-window iterative algorithm is applied in the computation to detect the harmonic components generated by nonlinear loads,which improves the real-time,tracing and anti-interference performances with less computation and easy implementation. The algorithm is simulated with Matlab,and the results show that it calculates the fundamental component of load current with small errors,which satisfies the practical application.

关 键 词：有源滤波 离散傅里叶变换 滑窗迭代算法 

分 类 号：TM76[电气工程—电力系统及自动化] TM930.9