A New Robust Control for Induction Motors

Abstract

In this paper, a new robust control was proposed for a class of induction motor (IM) system based on the immersion and invariance (I&I) approach. The proposed controller was examined in normal and faulty conditions. Under the faulty condition, a compensator was designed to achieve the robust controller. Two different faults were considered, the first fault was gradually increasing due to the change in rotor resistance, and the second one was a sudden fault due to the change in load torque. Asymptotic stability was proved based on the Lyapunov direct method of stability. The simulation results verify the effectiveness and capability of the proposed method.

KEYWORDS:

• Asymptotical stability
• Immersion and invariance control
• Induction motor
• Lyapunov stability analysis
• Uncertain dynamics

Additional information

Funding

This paper is partly supported by the National Science Foundation of China [grant numbers 61473183, U1509211, and 61627810].

Notes on contributors

Mohammad Hosein Sabzalian

Mohammad Hosein Sabzalian was born in Iran. He is a PhD scholar in Shanghai Jiaotong University, Shanghai, China. His main research interests are in intelligent control, adaptive control, smart grids and its automation. Email: [email protected]

Ardashir Mohammadzadeh

Ardashir Mohammadzadeh was born in West Azerbaijan, Khoy, Iran. He received the BSc, MSc, and PhD degrees in control engineering from Sahand University of Technology, Tabriz, Iran, K N Toosi University of Technology, Tehran, and University of Tabriz, Iran, in 2011, 2013, and 2016, respectively. He is currently assistant professor at the University of Bonab, Bonab, Iran.