电工技术学报2012，Vol.27Issue(12)：270-277,8.
改进加窗插值FFT动态谐波分析算法及应用
Improved Windowed Interpolation FFT Algorithm and Application for Power Harmonic Analysis
摘要
Abstract
In order to decrease the spectral leakage and picket fence effects of the windowed interpolation FFT algorithm for harmonic analysis,the spectral characteristics of fast decay and minimize sidelobe window(FDMS window) are analyzed and the interpolation FFT algorithms for electrical harmonic analysis based on the FDMS window are proposed in this paper.The applicable formulas of the interpolation are obtained by using polynomial curve fit functions,and subsequently calculating burden is dramatically reduced.The simulation results indicate that,with non-synchronized sampling and non-integral period truncation,the proposed method gives the accurate results for weak harmonic extraction and complicate harmonic analysis.The proposed method is applied in the three phase multiply function power energy meter,which verifies the usefulness of the proposed method.关键词
谐波分析/频谱泄漏/旁瓣最低与最速下降窗/插值算法/快速傅里叶变换Key words
Harmonic analysis/spectral leakage/fast decay and minimize sidelobe window/interpolation algorithm/fast Fourier transform分类
信息技术与安全科学引用本文复制引用
温和,滕召胜,王永,曾博,郑丹..改进加窗插值FFT动态谐波分析算法及应用[J].电工技术学报,2012,27(12):270-277,8.基金项目
国家自然科学基金资助项目 （）
