Abstract
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).
Lingua originale | English |
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pagine (da-a) | 1811-1819 |
Numero di pagine | 9 |
Rivista | IEEE Transactions on Instrumentation and Measurement |
Volume | 54 |
Stato di pubblicazione | Published - 2005 |
All Science Journal Classification (ASJC) codes
- ???subjectarea.asjc.3100.3105???
- ???subjectarea.asjc.2200.2208???