Dynamic analysis of electromechanical converters by means of the wavelet transform

Author

Arturi, C.M. ; Fedrigo, P. ; Gandelli, A. ; Leva, S. ; Morando, A.P.

Author_Institution

Dipartimento di Elettrotecnica, Politecnico di Milano, Italy

Volume

1

fYear

1999

fDate

1999

Firstpage

462

Abstract

After presenting the bi-assial model of the coupling between the four-quadrant power converter and the asynchronous motor, the paper numerically analyses the starting transient. The current obtained by the analytical relationships is then studied by means of the wavelet analysis, putting into evidence the starting transient component and the superimposed noise. It is clearly stated in the work how this methodology can extend to the transient analysis the evaluation of the harmonic content evolution during the transient phase and how any change in the power supply frequency influence the system dynamic. These results cannot be found as well by applying the more traditional Fourier transform

Keywords

Fourier transforms; harmonic distortion; induction motors; machine theory; power conversion harmonics; power convertors; starting; transient analysis; wavelet transforms; Fourier transform; asynchronous motor; bi-assial model; dynamic analysis; electromechanical converters; four-quadrant power converter; harmonic content evolution; power supply frequency; starting transient; superimposed noise; transient analysis; transient phase; wavelet transform; Couplings; Discrete wavelet transforms; Electronic mail; Power system harmonics; Signal analysis; Time frequency analysis; Transient analysis; Wavelet analysis; Wavelet domain; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on

Print_ISBN

0-7803-5769-8

Type

conf

DOI

10.1109/PEDS.1999.794607

Filename

794607