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 used in variable frequency drives. To control the torque (and thus finally the speed) of three-phase AC electric motors. This involves calculating an estimate of the motor’s magnetic flux. And torque based on the measured voltage and current of the motor.

DTC projects IEEE

The properties of DTC can be characterized as follows:

  1. Torque and flux can be changed very fast by changing the references
  2. High efficiency & low losses – switching losses are minimized because the transistors are switched only when it is needed to keep torque and flux within their hysteresis bands
  3. The step response has no overshoot
  4. No coordinate transforms are needed, all calculations are done in stationary coordinate system
  5. No separate modulator is needed, the hysteresis control defines the switch control signals directly
  6. There are no PI current controllers. Thus no tuning of the control is required
  7. The switching frequency of the transistors is not constant. However, by controlling the width of the tolerance bands the average switching frequency can be kept roughly at its reference value. This also keeps the current and torque ripplesmall. Thus the torque and current ripple are of the same magnitude as with vector controlled drives with the same switching frequency.
  8. Due to the hysteresis control the switching process is random by nature. Thus there are no peaks in the current spectrum. This further means that the audible noise of the machine is low