Deadbeat torque and flux control of induction motor with online resistances tuning

Abstract A stator flux oriented induction motor (IM) drives with deadbeat torque and flux control is proposed in this paper as high performances IM drives. This algorithm calculates the voltage vector necessary to be generated to the converter in order to eliminate the flux and the torque errors with the advantage of unnecessary intermediate current loop and good transient and steady state performances. Extended Kalman Filter (EKF) is designed for stator current and flux and stator and rotor resistances estimation. The rotor speed estimation is performed using a model reference adaptive system (MRAS). To keep the high performance of the control scheme in presence of rotor and stator resistances variations due to temperature rise, the control algorithm is online updated by the estimated resistances values at each sample time. The simulation results show the efficiency of the proposed control method in transient and steady state regimes.

[1]  Cheng-Zhi Cao,et al.  An application of fuzzy-inference-based neural network in DTC system of induction motor , 2002, Proceedings. International Conference on Machine Learning and Cybernetics.

[2]  R.D. Lorenz,et al.  Stator and rotor flux based deadbeat direct torque control of induction machines , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[3]  C. Schauder,et al.  Adaptive speed identification for vector control of induction motors without rotational transducers , 1989, Conference Record of the IEEE Industry Applications Society Annual Meeting,.

[4]  Frede Blaabjerg,et al.  Reduced-order extended luenberger observer based sensorless vector control driven by matrix converter with nonlinearity compensation , 2006, IEEE Transactions on Industrial Electronics.

[5]  Lassaad Sbita,et al.  A robust nonlinear observer for states and parameters estimation and on-line adaptation of rotor time constant in sensorless induction motor drives , 2007 .

[6]  Frede Blaabjerg,et al.  Variable-structure direct torque control - a class of fast and robust controllers for induction machine drives , 2004, IEEE Transactions on Industrial Electronics.

[7]  G. Griva,et al.  Direct torque control for dual-three phase induction motor drives , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[8]  Lipei Huang,et al.  Deadbeat flux level control of direct field-oriented high horse power induction servo motor using adaptive rotor flux observer , 1993 .

[9]  Mouna Ben Hamed,et al.  A Robust Sensorless Direct Torque Control of Induction Motor Based on MRAS and Extended Kalman Filter , 2008 .

[10]  D. S. Zinger,et al.  PI and fuzzy estimators for tuning the stator resistance in direct torque control of induction machines , 1994 .