Phase-locked loops (PLLs) and frequency-locked loops (FLLs) are of importance in power
and energy applications. Both technologies have been introduced to speed-sensorless …

After a technical review on the stator resistance and rotor resistance identification methods
for speed sensorless induction motor drives, this paper presents a different solution with a …

This paper presents a speed estimation scheme by combining a second-order sliding-mode
observer (SMO) with the model reference adaptive system (MRAS) in the sensorless-vector …

This paper addresses the problem of stator and rotor resistances identification in speed
sensorless induction motor (IM) drives. The IM model that is transformable into the adaptive …

This paper presents a new adaptive Backstepping technique to handle the induction motor
(IM) rotor resistance tracking problem. The proposed solution leads to improve the …

The Fourier transform is widely used to diagnose induction motor faults through the
monitoring of fault signatures from measured signals such as stator currents. For a good …

Accurate rotor time constant () value is necessary to ensure an acceptable performance of
the indirect field-oriented control (IFOC) strategy, where a detuned affects rotor flux …

In vector control, the accuracy of the current measurement is crucial for ensuring good
control performance. However, current measurement offset error is caused by various …

This article proposes an algorithm correcting the field orientation inaccuracy caused by
resolver periodic error and rotor time constant variation. It is found that the periodic error …

Dot product of stator current and rotor flux can be chosen to form a model reference adaptive
system (MRAS) to update the rotor time constant online in indirect-vector-controlled …