A Modified DTC of speed sensorless IPMSM drives using variable structure approach

In this paper a flexible direct torque control (DTC) of a sensorless interior permanent magnet synchronous motor drive is proposed based on variable structure approach and space vector modulation technique. According to this method, a sliding mode plus-PI controller is designed for torque and flux control respectively in stator flux reference frame. Simulation results obtained indicate improved performances for the proposed DTC controller and its robustness are preserved for the IPMSM drive.

[1]  F. Blaabjerg,et al.  A modified direct torque control (DTC) for induction motor sensorless drive , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[2]  Domenico Casadei,et al.  Implementation of a direct control algorithm for induction motors based on discrete space vector modulation , 2000 .

[3]  Lixin Tang,et al.  Problems associated with the direct torque control of an interior permanent-magnet synchronous motor drive and their remedies , 2004, IEEE Transactions on Industrial Electronics.

[4]  K. W. Lim,et al.  A direct torque controller for permanent magnet synchronous motor drives , 1997 .

[5]  Vadim I. Utkin,et al.  Sliding mode control in electromechanical systems , 1999 .

[6]  M.F. Rahman,et al.  Direct Torque and Flux Regulation of an IPM Synchronous Motor Drive Using Variable Structure Control Approach , 2004, IEEE Transactions on Power Electronics.

[7]  K. W. Lim,et al.  Analysis of direct torque control in permanent magnet synchronous motor drives , 1997 .

[8]  F. Blaabjerg,et al.  Very-low-speed variable-structure control of sensorless induction machine drives without signal injection , 2005, IEEE Transactions on Industry Applications.

[9]  M.F. Rahman,et al.  A direct torque controller for permanent magnet synchronous motor drives , 1997, 1997 IEEE International Electric Machines and Drives Conference Record.

[10]  Kyo-Beum Lee,et al.  Torque ripple reduction in DTC of induction motor driven by three-level inverter with low switching frequency , 2002 .

[11]  R. Krishnan,et al.  Implementation strategies for concurrent flux weakening and torque control of the PM synchronous motor , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[12]  Frede Blaabjerg,et al.  A simple direct-torque neuro-fuzzy control of PWM-inverter-fed induction motor drive , 2000, IEEE Trans. Ind. Electron..

[13]  Teck-Seng Low,et al.  An optimal speed controller for permanent-magnet synchronous motor drives , 1992, Proceedings of the 1992 International Conference on Industrial Electronics, Control, Instrumentation, and Automation.