基于傅立叶变换的伏安相位计设计与实现

The Design and Implementation of Volt-Ampere Phasemeter Based on Forier Transform

传统的"时间-相位"伏安相位计的测量精度主要受制于过零比较器,并且测量误差较大.利用离散傅立叶变换开发的伏安相位测量计没有幅相误差,不受谐波影响,电路简单,并且精度高.

The measuring accuracy of traditional volt-ampere phasemeter base on ＂time-phase＂ is enslaved to zero passage, and measurement error is large. The volt-ampere phasemeter which based on Fourier transform has no amplitude- phase error, and no effect by harmonics, and simple circuit and well measuring accuracy.