An induction motor speed measurement method based on current harmonic analysis with the chirp-Z transform

被引：60

作者：

Aiello, M ^{[1
]}

Cataliotti, A ^{[1
]}

Nuccio, S ^{[1
]}

机构：

[1] Univ Palermo, Dept Elect Engn, I-90128 Palermo, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2005年 / 54卷 / 05期

关键词：

chirp-Z transform (CZT); induction machine; rotor slot harmonics; speed measurement;

D O I：

10.1109/TIM.2005.854246

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new method to measure motor speed by means of frequency estimation of rotor slot spectral components in the supply current of squirrel single-cage induction motors. The novelty of the method consists in the harmonic analysis of the supply current by means of the chirp-Z transform (CZT). The advantages are improved accuracy due to better spectral resolution and resolvability. Moreover, a shorter observation window is required, thus reducing errors related to nonstationary current signals. The experimental results are presented to validate the proposed method and to make a comparison with a similar method based on the fast Fourier transform (FFT).

引用

页码：1811 / 1819

页数：9

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