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International Journal of Sensors, Wireless Communications and Control

Editor-in-Chief

ISSN (Print): 2210-3279
ISSN (Online): 2210-3287

Research Article

Estimation of Rotor Velocity and Stator Resistance for PMSM Drive using Back-EMF SMO

Author(s): Oussama Saadaoui*, Amor Khlaief, Moez Abassi and Abdelkader Chaari

Volume 13, Issue 1, 2023

Published on: 08 March, 2023

Page: [9 - 17] Pages: 9

DOI: 10.2174/2210327913666230214101119

Price: $65

Abstract

Background: Sensorless control of permanent magnet synchronous motor (PMSM) at low speed remains a challenging task.

Introduction: In this paper, a sensorless vector control of PMSM using a new structure of a back EMF sliding mode observer (SMO) is proposed.

Methods: To remove the mechanical sensors, a back EMF-SMO is built to estimate the rotor position and speed of PMSM drives. The SMO, which replaces a sign function with a sigmoid function, can reduce the chattering phenomenon. This sensorless speed control shows great sensitivity to stator resistance and system noise.

Results & Discussion: To improve the robustness of sensorless vector control, the back EMFSMO technique has been used for stator resistance estimation. A novel stator resistance estimator is incorporated into the sensorless drive to compensate for the effects of stator resistance variation.

Conclusion: The validity of the proposed SMO with a 1.1 kw low-speed PMSM sensorless vector control has been demonstrated by real experiments.

Graphical Abstract

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