基于全相位FFT的三相伏安相位检测算法

Volt Ampere Phase Detection Algorithm Based on All Phase FFT

该文主要阐述了一种利用全相位FFT变换、快速浮点数除法、非均匀量化查表的方法,来完成三相电伏安相位测量算法的设计。全相位FFT的算法是先对数据进行全相位预处理,然后进行传统的FFT运算。此算法具有初始相位不变和有效防止频谱泄露的特性,很好地解决非同步采样的频谱校正问题。

This article discusses the use of all phase of a fast Fourier transtorm,fast floating-point division,and non-uni- tom ouantization method of look-up table to complete the three-phase volt-ampere phase measuernet algorlthm desigh.The use of apFFT algonithm is the first Full phase of data preproeesscng.followed by the traditionat FFT computatton. The apFFT algorithm has the sarne initial phase and to effectively prevent leakage of the spectrum.Use apFFT algorithm can solve non-synchronous sampling of the spectrum correction problem.