Digital simulation and hardware implementation of a simple scheme for direct torque control of induction motor

A simple scheme that allows fast control of induction motor torque has been presented. It is different from the conventional direct torque control (DTC) scheme in the sense that it does not use the popular DTC switching table. Also, it does not require use of any online fast computing device like a microprocessor, personal computer (PC) or digital signal processor (DSP). The proposed scheme uses only commonly used discrete hardware components for its implementation. The experimental results obtained from the hardware realization of the proposed scheme are found to be in close agreement with the simulation results.

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

[2]  Ali Keyhani,et al.  Sensorless direct torque control of induction motors used in electric vehicle , 2002 .

[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]  Juha J. Pyrhönen,et al.  Estimation of the flux linkage in a direct-torque-controlled drive , 2003, IEEE Trans. Ind. Electron..

[5]  A. Tani,et al.  FOC and DTC: two viable schemes for induction motors torque control , 2002 .

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

[7]  P. Vas,et al.  Recent developments in sensorless and quasi‐sensorless drive , 2002 .

[8]  P. Sicard,et al.  Implementation of a DSP based real-time estimator of induction motors rotor time constant , 2002 .

[9]  R. Krishnan,et al.  Electric Motor Drives: Modeling, Analysis, and Control , 2001 .

[10]  T. Lipo,et al.  Vector Control and Dynamics of AC Drives , 1996 .

[11]  Nik Rumzi Nik Idris,et al.  An improved stator flux estimation in steady state operation for direct torque control of induction machines , 2000 .

[12]  Dinkar Prasad,et al.  A simple hardware realization of switching table based direct torque control of induction motor , 2007 .

[13]  Marian P. Kazmierkowski,et al.  Direct torque control of PWM inverter-fed AC motors - a survey , 2004, IEEE Transactions on Industrial Electronics.

[14]  L.M. Tolbert,et al.  Direct torque control of induction machines using space vector modulation , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

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