Abstract
The aim of paper is to investigate an efficient sensorless control method with vector-control technique for the induction motor (IM) drive systems. The proposed technique relies on the indirect rotor-field orientation control scheme (IRFOC). All sensorless control techniques are greatly affected by the observation of the speed estimation procedure. So, an efficacy new algorithm for estimating the rotor speed of the adopted machine is proposed. In addition, a simple effective method to estimate the machine rotor currents is suggested. The adopted rotor-speed observer is based on the concept of IRFOC method and the phase-axis relationships of IM. To ensure the capability of the proposed sensorless speed-control system, a simulation model is developed in the MATLAB/Simulink software environment. The robustness of the new control method is analyzed under parameter uncertainty issue. Furthermore, comprehensive experimental results are obtained. The whole obtained results confirm the validity of the proposed observer for sensorless speed control capability. The given results also verify the effectiveness of the suggested sensorless control system-based IRFOC for speed-control drive systems of IM. Moreover, the results assure that the presented rotor-speed observer is effectively robust via any parameter changes.
Highlights
Induction motors are mostly used in industrial application due to their high performance, robustness, efficiency, and cost [1]
For the required rotor-winding flux orientation and e effectively estimate the correct position, θe, for the required rotor-winding flux orientation and maintain. This the confirms and thecommand capability and of the proposed control system to effectively estimate theatvalidates correct position, θe, for theeffectiveness required to rotor-winding flux orientation and maintain rotor flux a command constant value according the presented the rotor flux at a constant value according to the presented effectivelytheestimate theatcorrect position, θe, for theaccording required to rotor-winding orientation maintain rotor flux a constant command value the presentedflux scheme. and maintain the rotor flux at a constant command value according to the presented indirect rotor-field orientation control scheme (IRFOC) scheme
This paper has proposed a sensorless vector-control strategy for speed-control drive systems of induction motor (IM)
Summary
Induction motors are mostly used in industrial application due to their high performance, robustness, efficiency, and cost [1]. Various methods for the target of sensorless control of induction motors have been outlined which are based on either signal or model algorithms [8,9,10,11,12,13,14,15,16,17,18,19,20,21,22] These methods have been suffering from many defects such as the complexity [17,18,19,20], the integration issue for the flux prediction process at low speeds, or the need of an observer [18,19] or Kalman filter [7].
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