Simultaneous estimation of speed and rotor resistance in the sensorless vector control systems with induction motors

Stoicuța, Olimpiu; Pana, Teodor; Molnar, Robin; Deaconu, Daniel

doi:10.1109/sielmen.2017.8123290

Cited by 6 publications

(1 citation statement)

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“…A variety of approaches have been taken for this purpose, some performing state estimation only and some also performing load and/or parameter estimation. Various problems have been encountered in the process, that is, simultaneous estimation of the rotor and stator resistances gives rise to instability 54 and inaccurate rotor and stator resistance estimations. 55 Model reference adaptive laws 56 estimate the flux and speed; however, the system response is not tested for load torque variations.…”

Section: Introductionmentioning

confidence: 99%

A robust-adaptive linearizing control method for sensorless high precision control of induction motor

Uyulan

2019

Measurement and Control

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Even if there exists remarkable applications of induction machines in variable speed drives and also in speed sensorless control in the low–high speed region, open/closed loop estimators in the literature utilized on induction machine sensorless position control vary regarding to their accuracies, sensitivity, and robustness with respect to the variation of model parameter. The deterioration of dynamic performance depends on the lack of estimation techniques which provide trustable information on the flux or speed/position over a wide speed range. An effective estimator should handle the high number of parameter and model uncertainties inherent to induction machines and also torque ripple, the compensation of which is crucial for a satisfactory decoupling and linearizing control to provide the accuracy and precision requirements of demanding motion control in the field of robotics/unmanned vehicle. In this study, to address all of the above-mentioned problems, robust-adaptive linearizing schemes for the sensorless position control of induction machines based on high-order sliding modes and robust differentiators to improve performance were designed. The control schemes based on direct vector control and direct torque control are capable of torque ripple attenuation taking both space and current harmonics into account. The simulation results comprise both the estimation and sensorless speed control of induction machines over a wide operation range, especially at low and zero speed, all of which are promising and indicate significant superiority over existing solutions in the literature for the high precision, direct-drive, speed/position sensorless control of squirrel-cage induction machines.

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Section: Introductionmentioning

confidence: 99%