6533b82cfe1ef96bd128f4cb

RESEARCH PRODUCT

An induction motor speed measurement based on current harmonic analysis with Chirp-Z Transform

Salvatore NuccioM. AielloAntonio Cataliotti

subject

EngineeringRotor (electric)business.industryBluestein's FFT algorithmFast Fourier transformSignallaw.inventionHarmonic analysislawHarmonicsChirpElectronic engineeringbusinessInduction motor

description

The paper presents a new method to measure motor speed by means of frequency estimation of rotor slot harmonics present in the supply current of squirrel single cage induction motors. The novelty of the method is the use of Chirp-Z Transform as supply current harmonic analysis. The advantages are an improved spectral resolution and accuracy. Moreover a shorter sampling time window is required reducing errors related to not stationary current signal. Experimental results are presented to validate the proposed method and to perform a comparison with FFT based one.

yearjournalcountryeditionlanguage
2002-11-13IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188)
https://doi.org/10.1109/imtc.2001.928884