Title :
A new rotor time constant update rule using stator flux estimates for an induction motor
Author :
Kang, Gubae ; Jung, Jinhwan ; Nam, Kwanghee
Author_Institution :
Dept. of Electr. Eng., Postech Univ., Pohang, South Korea
Abstract :
Stator flux can be estimated from the stator current, or by integrating Vs-Rsis. The two flux estimates do not agree if there is an error in the rotor time constant. The authors analyze the relative angular positions of the two estimates for various cases. Based on the analysis, they develop an index from the stator estimates and q-axis stator current that indicates the polarity of the rotor time constant estimation error. The index is utilized for the rotor time constant update algorithm. The authors demonstrate the effectiveness of the proposed method through computer simulation and experiment results
Keywords :
control system analysis computing; electric machine analysis computing; induction motors; machine vector control; parameter estimation; robust control; rotors; stators; computer simulation; control simulation; induction motor control; q-axis stator current; relative angular position; rotor time constant estimation error; rotor time constant update rule; stator current; stator estimates; stator flux estimation; Computer simulation; Estimation error; Frequency; Induction motors; Machine vector control; Rotors; Stators; Synchronous motors; Torque; Voltage;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.801666
