Sensor less low speed control with ANN MRAS for direct torque controlled induction motor drive

This paper presents speed sensorless direct torque control (DTC) of induction motor using Artificial intelligence (AI). The artificial neural network (ANN) MRAS-based speed estimation is used. The error between the reference model and the neural network based adaptive model is used to adjust the weights by on-line Back propagation (BP) training algorithm. To improve low speed operation, the drive uses a full-order sliding-mode without rotor speed adaptation i.e., Due to dual implementation of stationary and rotating reference frames, the proposed observer does not require any speed adaptation and is inherently sensorless. Unlike speed adaptive observers, the proposed observer is immune to speed estimation errors; thus, its performance at very low speed is improved significantly. Experimental results for the sensorless drive are presented. Very low-speed-operation (5 rad/s) capability of the drive with the sensorless observer is demonstrated.

[1]  Ahmed Abbou,et al.  Real-time DSP implementation of DTC neural network-based for induction motor drive , 2010 .

[2]  Maurizio Cirrincione,et al.  An MRAS-based sensorless high-performance induction motor drive with a predictive adaptive model , 2005, IEEE Transactions on Industrial Electronics.

[3]  J. Holtz,et al.  Sensorless vector control of induction motors at very low speed using a nonlinear inverter model and parameter identification , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[4]  Thomas G. Habetler,et al.  Zero-speed tacholess IM torque control: simply a matter of stator voltage integration , 1998 .

[5]  I. Takahashi,et al.  High-performance direct torque control of an induction motor , 1989 .

[6]  Bin Wu,et al.  New integration algorithms for estimating motor flux over a wide speed range , 1997 .

[7]  K. Matsuse,et al.  Behavior of sensorless induction motor drives in regenerating mode , 1997, Proceedings of Power Conversion Conference - PCC '97.

[8]  H. Kubota,et al.  DSP-based speed adaptive flux observer of induction motor , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[9]  L. Ben-Brahim,et al.  Practical considerations for sensorless induction motor drive system , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).

[10]  M. Akherraz,et al.  MRAS-ANN based sensorless speed control for direct torque controlled induction motor drive , 2009, 2009 International Conference on Power Engineering, Energy and Electrical Drives.

[11]  Young Ahn Kwon,et al.  A novel MRAS based speed sensorless control of induction motor , 1999, IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029).

[12]  Matthew W. Dunnigan,et al.  Comparative study of a sliding-mode observer and Kalman filters for full state estimation in an induction machine , 2002 .

[13]  Joachim Holtz,et al.  Sensorless control of induction motor drives , 2002, Proc. IEEE.

[14]  L. Ben-Brahim,et al.  Speed control of induction motor without rotational transducers , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[15]  Peter Vas,et al.  Sensorless vector and direct torque control , 1998 .

[16]  Marco Tursini,et al.  Adaptive sliding mode observer for speed sensorless control of induction motors , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[17]  Ji-Yoon Yoo,et al.  Speed-sensorless vector control of an induction motor using neural network speed estimation , 2001, IEEE Trans. Ind. Electron..

[18]  Longya Xu,et al.  A new current model flux observer for wide speed range sensorless control of an induction machine , 2002 .

[19]  M. Depenbrock,et al.  Direct self-control (DSC) of inverter-fed induction machine , 1988 .

[20]  Bimal K. Bose,et al.  Modern Power Electronics and AC Drives , 2001 .

[21]  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,.

[22]  Joachim Holtz,et al.  Drift and parameter compensated flux estimator for persistent zero stator frequency operation of sensorless controlled induction motors , 2002 .

[23]  Jan Melkebeek,et al.  Speed sensorless direct torque control of induction motors using an adaptive flux observer , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[24]  Seung-Ki Sul,et al.  Speed sensorless vector control of induction motor using extended Kalman filter , 1994 .