| DFT算法在电能质量谐波分析中的应用 |
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| 引用本文： | 王瑜,李松. DFT算法在电能质量谐波分析中的应用[J]. 变频器世界, 2011, 0(12): 112-114,111 |
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| 作者姓名： | 王瑜 李松 |
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| 作者单位： | 西南交通大学电气工程学院 |
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| 摘 要： | 介绍了以TI公司TMS320F2812为核心的电能质量监测仪，结合DSP芯片特点分析了用DFT进行连续信号的频谱分析方法，并仿真了同步采样幅频与非同步采样幅频的实验结果。本文对谐波参数的计算，在传统傅里叶算法的基础上对加窗插值的FFT算法进行了深入研究，从而有效的减少非同步采样造成的频谱泄露和栅栏效应，大大提高各次谐波幅值及相位的计算精度。
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| 关 键 词： | TMS320F2812 DFT 谐波分析 |
Application of DFT Algorithm on Harmonics Analysis of Power Quality |
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| Wang Yu Li Song. Application of DFT Algorithm on Harmonics Analysis of Power Quality[J]. THE WORLD OF INVERTERS, 2011, 0(12): 112-114,111 |
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| Authors: | Wang Yu Li Song |
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| Affiliation: | Wang Yu Li Song |
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| Abstract: | This paper introduces a power quality analyzer with TMS320F2812 produced by TI corporate, and analyses the way of continuous signal with DFT, and simulate syn-chronous and asynchronous amplitude-frequency sampling. In thJs paper, the calculation of harmonic parameters, based on the traditional Fourier transforrnalgorithm and the windowed interpolation FFT algorithm in-depth research, thus the non-synchronous sampling of the spectrum caused by leakage and fence effect, greatly enhance the harmon- ic amplitude value and phase accuracy. |
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| Keywords: | TMS320F2812 DFT Harmonic analysis |
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