Real-Time Sensor-Less Vector Control of Induction Motor Drive Using Model Reference Adaptive System

Abstract
In today’s competitive and advanced motion control industries, any designed controller is expected to provide precise speed control and reduced time-to-market for its practical deployment. In the current study, a Model Reference Adaptive System based sensor-less vector controlled induction motor drive system is meticulously designed and simulated in time-domain using an offline environment namely MATLAB/SIMULINK software utilizing a rotor reference frame. The suggested controller’s ability to precisely follow the reference speed even at 33% of its rated speed demonstrates its superiority. The efficacy of the proposed strategy is further substantiated through an examination in the s-domain.However, the signals generated by this controller are not real-time clock synchronized due to a large computation burden of up to 20 times, even when utilizing the latest configured PC with i7 processor. Thus, the model is transformed from offline to online model with a field programmable gate array based OPAL-RT real-time-simulator using Rapid-Control-Prototyping strategy. Due to parallel processing of the simulator, the proposed set-up produces real-time clock synchronized signals by reducing the computation load to the required value of one. The similarity of offline and online results not only validates the proposed model, but the development process can help researchers to analyze potential design flaws early, reducing both costs and time-to-market, boosting practical implementation of the proposed controller in reduced time.
Keywords: Induction Machine, Model-Reference-Adaptive-System, Rapid-Control-Prototyping, Real-TimeSimulator.

Author(s): Vivek Pahwa*
Volume: 6 Issue: 4 Pages: 935-949
DOI: https://doi.org/10.47857/irjms.2025.v06i04.06096