Wavelet Transform for Starting Characteristics of Three-Phase Cage Asynchronous Motor

Abstract:

In electric machinery performance test, tooth harmonic time-frequency characters of first order of three-phase cage asynchronous motor are most important. The MATLAB software is used to make model and simulate the starting characteristic of asynchronous motor in this article, while the stator current signal of starting motor is de noised by wavelet transform. Through decomposition and reconstruction of wavelet transform, the amplitude of fundamental and harmonic wave in de noising stator current can be reduced, and then the tooth harmonic of first order of starting rotor is extracted. Using the excellent time-frequency analyzing characters of wavelet package transform, the tooth harmonic time-frequency curve is fitted.

• Periodical: Advanced Materials Research (Volumes 347-353)
• Pages: 2987-2990
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.347-353.2987
• Online since: October 2011
• Authors: Yuan Yuan Li, Qi Zhong Liu, Chao Gang Yu
• Keywords: Starting Characteristics, Three-Phase Cage Asynchronous Motor, Wavelet Packet (WP), Wavelet Transform (WT)

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