Online tuning of stator resistance in DTC drive based on wavenet theory

الملخص EN

Direct torque control (DTC) needs the stator resistance of the induction motor for the estimation of stator flux.

The variation of stator resistance due to temperature and stator frequency changes will greatly affect the performance of DTC drive run at low speed.

In this paper, a method for the tuning of changes in stator resistance during the operation of the machine is proposed.

The tuning method is based on wave net theory.

To show the ability of the proposed method, a PI stator resistance tuner is presented.

The tuners observe the magnitude of stator flux of the machine to detect the changes in stator resistance.

The performances of the two methods are compared using Matlab / Simulink simulation results.

The simulation results show that the proposed wave net stator resistance tuner efficiently improves the DTC performance, superior to the PI stator resistance tuner.