摘要
针对电网谐波的特点,在模/数转换和DFT分析的基础上,分析了谐波检测中的频谱混叠。采用模拟低通滤波器降低频谱混叠,提高谐波检测的实时性。
Aiming at specialty of harmonic in electric-network, analyzed spectrum alias based on the converting analog signals into digital signal and the analysis of discrete fourier transform （DFT）. Simulating low pass filter is adopted to reduce the Spectrum alias and improve the speed of harmonic measurement.
出处
《电气传动自动化》
2006年第4期58-59,共2页
Electric Drive Automation
关键词
谐波检测
频谱混叠
低通滤波器
harmonic measurement
spectrum alias
low pass filter
