dc.contributor |
Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica |
dc.contributor |
Universitat Politècnica de Catalunya. QSE - Qualitat del Subministrament Elèctric |
dc.contributor.author |
Monjo Mur, Lluís |
dc.contributor.author |
Córcoles López, Felipe |
dc.contributor.author |
Pedra Durán, Joaquim |
dc.date |
2012-12-24 |
dc.identifier.citation |
Monjo, L.; Corcoles, F.; Pedra, J. Saturation effects on torque- and current–slip curves of squirrel-cage induction motors. "IEEE transactions on energy conversion", 24 Desembre 2012, vol. 28, núm. 1, p. 243-254. |
dc.identifier.citation |
0885-8969 |
dc.identifier.citation |
10.1109/TEC.2012.2232672 |
dc.identifier.uri |
http://hdl.handle.net/2117/17751 |
dc.language.iso |
eng |
dc.rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Energies::Energia elèctrica |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria mecànica::Motors::Motors elèctrics |
dc.subject |
Electric motors, Induction |
dc.subject |
Motors elèctrics |
dc.title |
Saturation effects on torque- and current–slip curves of squirrel-cage induction motors |
dc.type |
info:eu-repo/semantics/publishedVersion |
dc.type |
info:eu-repo/semantics/article |
dc.description.abstract |
This paper measures and analyzes the saturation
effects on torque- and current–slip curves of three squirrel-cage induction
motors.Motor saturation is illustrated by three sets of measurements:
I) torque and current for each slip measured at three
voltage levels; II) short-circuit impedance measured at different
current levels; and III) no-load impedance measured at different
voltage levels. In test I, torque and current measured at reduced
voltage are prorated to full voltage for comparison purposes. A
double-cage model is used to model the motors, and the nonlinearity
of their reactances is examined. In order to evaluate the individual
weight of every nonlinear reactance on the observed saturated
behavior, we try to fit the measurements considering that only one
reactance of the double-cage model is nonlinear. Good agreement is
obtained only when the stator leakage reactance is considered nonlinear.
On the contrary, when magnetizing or remaining leakage
reactances are considered nonlinear, they predict machine behaviors
inconsistent with measurements. In otherwords, the saturation
of the stator leakage reactance is the main contributor to torque
and current behavior, while the saturation of the remaining reactances
has a negligible influence. Consequently, when all voltage
levels are considered, the squirrel-cage induction motors can be
accurately modeled (with reasonable accuracy) with a double-cage
modelwhere only the stator leakage reactance is considered nonlinear.
When only a constant voltage level is considered, the paper also
proves that a linear double-cage model (all reactances are linear)
accurately predicts machine behavior at such voltage level. |