A Precise and Rapid Algorithm for Harmonic Analysis Based on Multi-Spectrum-Line in Main Lobe Width Interpolation FFT
Zhang Junmin1, Liu Kaipei2, Wang Li3, Zhang Ying1
1. Collage of Computer Science South-Central University for Nationalities Wuhan 430074 China; 2. College of Electrical Engineering Wuhan University Wuhan 430072 China; 3. State Grid TianJin Electric Power Company Tianjin 300000 China
Abstract：This paper has induced multi-spectrum-line interpolation algorithm based on main-lobe width. At the same time, we have proved that the phase difference of any two adjacent spectrum lines is. According to this rule, this paper has induced a rapid algorithm so that square root is only calculated one time when we analyze some harmonic parameters. Based on the different order’s hanning self-multiplication windows, the simulation results have shown that the multi-spectrum-line interpolation algorithm has higher precision than double/triple-spectrum-line interpolation algorithm especially when the order of polynomial is lower than two others if obtaining same precision and the rapid algorithm can save calculation amount greatly.
张俊敏, 刘开培, 汪立, 张颖. 基于主瓣宽度多谱线插值的高精度快速谐波分析算法[J]. 电工技术学报, 2018, 33(zk1): 121-128.
Zhang Junmin, Liu Kaipei, Wang Li, Zhang Ying. A Precise and Rapid Algorithm for Harmonic Analysis Based on Multi-Spectrum-Line in Main Lobe Width Interpolation FFT. Transactions of China Electrotechnical Society, 2018, 33(zk1): 121-128.
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2018, Vol. 33 
