基于人口迁移算法和TLS_ESPRIT算法的间谐波分析

Interharmonics analysis based on population migration algorithm and TLS_ESPRIT algorithm

提出了人口迁移算法和TLS_ESPRIT算法相结合的间谐波分析方法,首先使用TLS_ESPRIT算法估计信号中间谐波的个数和频率,然后将谐波分析问题转化为函数的参数优化问题,并应用人口迁移算法对间谐波幅值和初相角进行参数优化估计。仿真结果表明,该方法可较准确地分析间谐波的频率、幅值和初相角等参数。

This paper proposes the interharmonics analysis based on population migration algorithm and TLS_ESPRIT algorithm,which estimates the quantity and frequency of the interharmonics in signal with TLS_ESPRIT algorithm,and after that transforms harmonic analysis to parameters optimization,and evaluates the parameters optimization for the amplitude and initial phase angle of interharmonics with population migration algorithm.The result of simulation shows that this method is able to obtain accurate parameters of interharmonics,such as frequency,amplitude and initial phase angle.