On the Use of Fractional-Order Controllers for Performance Improvements in AC Drives

• Published in: Electric power components and systems Vol. 43; no. 5; pp. 485 - 490
• Main Authors: Mehmood, Chaudhry Arshad, Kavasseri, Rajesh G.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 16.03.2015; Taylor & Francis Ltd
• Subjects: Controllers; Electric power; flux weakening; fractional order controller; indirect field oriented control; indirect vector control; induction motor; induction motor parametric uncertainty; oustaloup algorithm; Simulation; speed control of induction motor; symmetric optimum; vector control; Velocity; United States > US
• ISSN: 1532-5008; 1532-5016
• DOI: 10.1080/15325008.2014.986777

Abstract-The control performance of AC electric drives is sensitive to and often degrades with parametric variations. This article proposes the use of fractional-order controllers to combat parameter variations. The speed control of an AC induction motor drive achieved through indirect field-oriented control is considered for illustration. The performance of the proposed controller is compared with a well-tuned proportional-integral controller when critical motor parameters are subject to parametric variations about their nominal values. Dynamic simulations in MATLAB/Simulink (The Math Works, Natick, Massachusetts, USA) are conducted to assess control performance.