Title :
A novel approach for temperature estimation in squirrel-cage induction motor without sensors
Author :
Lazarevic, Zoran ; Radosavljevic, Radovan ; Osmokrovic, Predrag
Author_Institution :
Dept. of Electr. Eng., Belgrade Univ., Serbia
fDate :
6/1/1999 12:00:00 AM
Abstract :
In this paper, the authors present a coupled thermal and electromechanical model for squirrel-cage induction motor simulation and analyses. The effect of iron saturation, rotor parameter variation due to current displacement (skin-effect) and temperature variations of both stator and rotor resistances are taking into account simultaneously. A new device for the temperature measurement in the stationary as well as rotating parts of electric machines is built. The unique construction of the device for continuous rotor temperature monitoring is briefly described. This device is a part of a complete acquisition system, which is used for precise testing and investigating of a coupled thermal and electromechanical phenomena. An original thermal observer based on the direct stator temperature measurement under normal running condition with no additional sensors is proposed
Keywords :
computerised instrumentation; data acquisition; electric machine analysis computing; squirrel cage motors; temperature measurement; computerised instrument; continuous rotor temperature monitoring; coupled thermal/electromechanical model; current displacement; data acquisition system; hot spot temperature; iron saturation; motor simulation; normal running condition; precise testing; rotor parameter variation; rotor resistance; skin-effect; squirrel-cage induction motor; stator resistance; temperature estimation; temperature measurement; temperature variations; thermal observer; Analytical models; Coupled mode analysis; Couplings; Electric machines; Induction motors; Iron; Rotors; Stators; Temperature measurement; Temperature sensors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
