基于十项余弦窗的插值FFT谐波算法及其应用研究  

Application Research on FFT Harmonic Algorithm Based on Ten Cosine-Sum Window

作　　者：胡治国[1] 徐晓贝[1] 郑征[1] 徐晓光 贾珍[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003 [2]鹤壁市供电公司,河南鹤壁458000

出　　处：《煤矿机电》2014年第2期1-5,共5页Colliery Mechanical & Electrical Technology

基　　金：国家自然基金资助项目(51077125);河南省控制工程重点学科开放实验室资助项目(KG2011-06)

摘　　要：针对谐波分析时非同步采样带来的频谱泄漏和栅栏效应问题,提出了一种基于十项余弦窗的插值FFT谐波算法,设计了基于TMS320F28335 DSP的三相谐波检测装置,并把该算法写入DSP应用在检测装置;完成了硬件设计、算法推导、软件设计和整个装置的调试工作。实际运行表明,应用该算法的三相谐波检测装置不仅可满足GB/T 14549-93的A等级误差要求,而且有效地提高电网谐波测量精度,具有实际应用价值。Based on the spectrum leakage and fence effect of non-synchronous harmonic analysis, proposes the interpolation FFT harmonic algorithm based on ten cosine window. Designs the three phase harmonic testing devices based on TMS320F28335 DSP, and programs this algorithm into DSP application testing devices. The hardware design, algorithmic derivation, software design and device debugging are finished in this project. The practical running results prove that this three phase harmonic testing device can not only meet the A class error requirements according to GB/T 14549-93, but also improve the measurement accuracy of power system＇s harmonics, which has the application value.

关 键 词：谐波 十项余弦窗 FFT谐波算法软件 DSP处理器 检测装置 

分 类 号：TP311.562[自动化与计算机技术—计算机软件与理论]