DocumentCode :
2587125
Title :
A stator and rotor resistance estimation technique for conductor temperature monitoring
Author :
Lee, Sang-Bin ; Habetler, Thomas G. ; Harley, Ronald G. ; Gritter, David J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Volume :
1
fYear :
2000
fDate :
2000
Firstpage :
381
Abstract :
A stator and rotor resistance (Rs,Rr) estimation technique for the purpose of stator winding and rotor conductor temperature (Ts,Tr) monitoring is presented in this paper. Since resistance is a direct indicator of temperature, resistance-based temperature estimation provides many advantages over conventional thermal model based methods. The proposed estimation scheme is a two-step procedure based on the voltage, current, and speed measurements. The first step is to estimate the rotor resistance and rotor flux linkage simultaneously based on a model reference adaptive system (MRAS) structure that is independent of Rs. In the second step, the stator resistance is updated based on the estimated rotor flux linkage using the q-axis stator voltage equation in the synchronous reference frame. Simulation and experimental results are given to confirm the validity of the proposed method. An analysis of the parameter sensitivity of both estimators is also included to examine the feasibility of the proposed technique
Keywords :
angular velocity measurement; asynchronous machines; electric current measurement; electric resistance; magnetic flux; parameter estimation; rotors; stators; temperature measurement; voltage measurement; conductor temperature monitoring; current measurement; induction machines; model reference adaptive system; parameter sensitivity; q-axis stator voltage equation; resistance-based temperature estimation; rotor conductor temperature; rotor flux linkage; rotor resistance estimation; speed measurement; stator resistance estimation; stator winding temperature; synchronous reference frame; voltage measurement; Adaptive systems; Conductors; Couplings; Equations; Monitoring; Stator windings; Temperature; Thermal resistance; Velocity measurement; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
ISSN :
0197-2618
Print_ISBN :
0-7803-6401-5
Type :
conf
DOI :
10.1109/IAS.2000.881139
Filename :
881139
Link To Document :
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