Induction motors thermal monitoring by means of rotor resistance identification

Induction Motors Thermal Monitoring by Means of Rotor Resistance Identification

Rotor and stator temperature are of concern in both shortterm machine protection and in longer term condition monitoring for large induction machines. Especially, when operating with overload cycles, it is necessary to monitor rotor bars and stator winding temperatures to make sure that the temperature remains below prescribed limits. The purpose of this paper is to present a thermal monitoring...

Induction Motors Thermal Analysis

Original scientific paper The temperature distribution over the cross-section of an induction motor is calculated at the steady state and transient condition. In order to develop smaller and more efficient electric motors, there is a necessity to carry out more thermal analysis in parallel with the traditional electromagnetic design. It has been found that attention to the thermal design can be...

Induction Motors with Rotor Helical Motion

Prediction of Thermal Condition of Cage-rotor Induction Motors under Non-standard Supply Systems

A hybrid thermal model for accurate estimation of thermal condition of cagerotor induction motors under non-standard supply systems has been presented. The developed thermal model is a combination of lumped and distributed thermal parameters which are available from motor dimensions and other physical constants. The thermal condition of the motor under non-standard supply systems such as unbala...

Supervisory "eld-oriented control of induction motors with uncertain rotor resistance

Vetrotex International, Groupe Saint-Gobain, 767, quai des Allobroges, 73009, Chambe& ry, France University of Southern California, Electrical Engineering } Systems, 3740 McClintock Avenue, Room 318, Los Angeles, CA 90089-2563, U.S.A. Center for Computational, Vision and Control, Yale University, New Haven, CT 06520, U.S.A. Lab. des Signaux & Syste%mes, CNRS}Supe& lec}Univ. Paris Sud, Plateau d...