基于迭代傅里叶变换的交流电压基波幅值与相位检测

摘要

Aiming at alternating voltage signal fundamental wave amplitude and phase testing, this paper raised a method based on iterative Fourier transform to calculate alternating voltage fundamental wave amplitude and phase testing. The algorithm carried out addition and subtraction once for each of voltage sampled data to obtain correct fundamental wave amplitude and phase. Simulated experiment verifies that compared with traditional phase-locked technology, the algorithm can not only obtain faster tracking speed and more exact phase angle, but also save much more computation time than district Fourier transform.%　　针对电力系统中交流电压信号基波幅值与相位的检测，提出了一种迭代傅里叶变换计算交流基波电压幅值和相位的方法，该算法利用每次电压采样数据进行一次加减法计算即可获得准确的基波电压幅值和相位，通过仿真实验验证了该算法不仅较传统的锁相环技术能够获得更快的跟踪速度和更高的相角精度，而且还比基于离散傅里叶变换的锁相技术节省大量计算时间。