DTC Projects

DTC projects IEEE for BTech and MTech using Matlab/Simulink

For more DTC projects IEEE go through the Projects List

AT-DTC-1Analysis and performance of the induction motor under hysteresis current controlled DTC
AT-DTC-2Simplified SVPWM algorithm for neutral point clamped 3-level inverter fed DTC induction motor drive
AT-DTC-3A constant switching frequency based DTC method for interior PMSG motor
AT-DTC-4Analysis and traction motor drive with regenerative braking and using modified Direct Torque Control
AT-DTC-5Improved Direct Torque Control of induction motor
AT-DTC-6Direct torque control of squirrel cage induction motor for optimum current ripple using three level inverter
AT-DTC-7Study of induction motor drive with direct torque control scheme and indirect field oriented control scheme using vector modulation
AT-DTC-8Direct torque control of induction motor drive with flux optimization
AT-DTC-9Direct torque control of induction motor with constant switching frequency
AT-DTC-10Direct Torque Control Based on Space Vector Modulation with Adaptive Stator Flux Observer for Induction Motors

Direct torque control (DTC) is utilized in changeable frequency drives to manage the torque of 3-phase AC electric motors. This includes calculating an approximation of the motor’s magnetic flux. And torque based on the calculated voltage and current of the motor.

The following are the DTC properties:

  1. Torque and flux can be altered very fast by varying the references
  2. High efficiency & low losses – switching losses are reduced as the transistors are switched merely when it is desirable to keep torque and flux inside their hysteresis bands
  3. There is no overshoot in step response
  4. Coordinate transforms are not required, all calculations can be done in inactive coordinate system
  5. Separate modulator is not needed, the hysteresis control describes the switch control signals frankly
  6. No PI current controllers are required. Thus no need of control tuning.
  7. The transistors switching frequency is not constant. Though, by scheming the width of the tolerance bands the common switching frequency can be kept around at its reference value. This also puts the torque and current ripple small. Thus the torque and current ripple are of the same magnitude as with vector controlled drives with the same switching frequency.
  8. The switching process by nature is random due to the hysteresis control. As a result there are no peaks in the existing spectrum. This also means that the easy to hear noise of the machine is small.

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