Sliding mode based DTC of three-level inverter fed induction motor using switching vector table

This paper presents two sliding surfaces to control stator flux magnitude and developed torque of the motor. Sliding surfaces enforce the control variables to the respective reference values. A three-level switching vector table (SVT) approach is used to implement sliding mode direct torque control (SM-DTC) of induction motor drive. The SVT is formed using stator flux position in the space vector region of 3L inverter by observing the most significant vector that reflects effective change of flux magnitude and torque in that position. This switching table is simple and gives proper selection of space vector for improved performance of the DTC. Hence, the proposed SM-DTC reduces the complexity of DTC drive, improves the performance of the drive through reducing flux, torque and current ripples. The system is simulated in MATLAB/SIMULINK environment and simulation results are presented to report the improved performance of sliding mode based DTC dive.

[1]  Ahmed Shehada,et al.  An improved CSI fed induction motor drive , 2013 .

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

[3]  M. Depenbrock,et al.  Direct self control of inverter-fed induction machine, a basis for speed control without speed-measurement , 1989, Conference Record of the IEEE Industry Applications Society Annual Meeting,.

[4]  J.N. Nash.  Direct torque control, induction motor vector control without an encoder , 1996, Conference Record of 1996 Annual Pulp and Paper Industry Technical Conference.

[5]  Abdul R. Beig,et al.  Influence of placement of small space vectors on the performance of PWM techniques for three level inverters , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[6]  Muhammad H. Rashid,et al.  Power Electronics: Circuits, Devices and Applications , 1993 .

[7]  F. Blaabjerg,et al.  Direct torque control of sensorless induction motor drives: a sliding-mode approach , 2004, IEEE Transactions on Industry Applications.

[8]  J.L. Romeral,et al.  New DTC control scheme for the induction motor fed with a three-level inverter , 2005, Proceedings of the IEEE International Symposium on Industrial Electronics, 2005. ISIE 2005..

[9]  M. Cirrincione,et al.  Direct torque control for three-level fed induction motor drives with capacitor voltage ripple minimization , 2008, 2008 34th Annual Conference of IEEE Industrial Electronics.

[10]  Toshihiko Noguchi,et al.  A New Quick-Response and High-Efficiency Control Strategy of an Induction Motor , 1986, IEEE Transactions on Industry Applications.

[11]  Vadim I. Utkin,et al.  Sliding mode control design principles and applications to electric drives , 1993, IEEE Trans. Ind. Electron..

[12]  Wei Xu,et al.  Speed sensorless direct torque control of 3-level inverter-fed induction motor drive based on optimized switching table , 2009, 2009 35th Annual Conference of IEEE Industrial Electronics.

[13]  M. G. Jayne,et al.  New DTC Control Scheme for Induction Motors fed with a Three-level Inverter , 2005 .

[14]  Shir-Kuan Lin,et al.  Sliding-mode direct torque control of an induction motor , 2001, IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243).

[15]  A. Consoli,et al.  Slip frequency detection for indirect field oriented control drives , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

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

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

[18]  V. T. Ranganathan,et al.  A novel CSI-fed induction motor drive , 2006, IEEE Transactions on Power Electronics.

[19]  Andreas Steimel,et al.  Sliding-Mode-Based Control for a Three-Level Inverter Drive , 2008, IEEE Transactions on Industrial Electronics.