Small-Signal Modeling of Mutual Saturation in Induction Machines

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Journal Title
Journal ISSN
Volume Title
School of Electrical Engineering | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2010
Department
Sähkötekniikan ja automaation laitos
Department of Electrical Engineering and Automation
Major/Subject
Mcode
Degree programme
Language
en
Pages
965-973
Series
IEEE Transactions on Industry Applications, Volume 46, Issue 3
Abstract
A small-signal model is derived for saturated induction machines. Inductances are allowed to saturate as a function of their own current (or flux), and the mutual saturation effect originating mainly from skewed or closed rotor slots is also included in the model. The model fulfills the reciprocity conditions, and it can be applied to parameter identification and to the analysis and development of flux angle estimation methods. As application examples, the parameters of a 2.2-kW induction machine were identified using the data obtained from time-stepping finite-element analysis and locked-rotor measurements. The proposed model fits well to the data, and the fitted parameters are physically reasonable.
Description
Keywords
closed slots, induction motors, magnetic saturation, motor models, reciprocity, rotor skew, signal injection
Other note
Citation
Hinkkanen, Marko & Repo, Anna-Kaisa & Ranta, Mikaela & Luomi, Jorma. 2010. Small-Signal Modeling of Mutual Saturation in Induction Machines. IEEE Transactions on Industry Applications. Volume 46, Issue 3. 965-973. ISSN 0093-9994 (printed). DOI: 10.1109/tia.2010.2046290.