Title :
Implementation of extended Luenberger observers for joint state and parameter estimation of PWM induction motor drive
Author :
Du, T. ; Brdys, M.A.
Author_Institution :
Birmingham Univ., UK
Abstract :
The paper presents practical implementation results of three full-order extended Luenberger observers (FELOs) for joint state and parameter estimation of a PWM induction motor drive. Ob-I is for joint rotor time constant and rotor flux estimation, Ob-II for joint shaft speed and rotor flux estimation, and Ob-III for joint shaft speed, load torque as well as rotor flux estimation. The advantages of FELOs over extended Kalman filters are pointed out. The results show that the extended Luenberger observers are able to work satisfactorily in practical industry environment, generating the estimates with fast dynamics
Keywords :
control system analysis; digital control; electric drives; induction motors; machine control; machine theory; microcomputer applications; parameter estimation; pulse width modulation; rotors; state estimation; PWM induction motor drive; extended Luenberger observers; load torque; machine control; machine theory; parameter estimation; rotor flux; rotor time constant; shaft speed; state estimation;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
