Using Full Order and Reduced Order Observers for Robust Sensorless Predictive Torque Control of Induction Motors

• Published in: IEEE transactions on power electronics Vol. 27; no. 7; pp. 3424 - 3433
• Main Authors: Davari, S. A., Khaburi, D. A., Fengxiang Wang, Kennel, R. M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: A.c. Machines; Applied sciences; Comparative analysis; Electric currents; Electrical engineering. Electrical power engineering; Electrical machines; Electronics; Exact sciences and technology; General (including economical and industrial fields); Induction motor; Mathematical model; observer; Observers; Predictive models; predictive torque control; Regulation and control; Rotors; sensorless drive; Simulation; Stators; Testing. Reliability. Quality control; Torque; Torque control; Cost minimization; sensorless drive; Sliding mode; Feedback regulation; Asynchronous motor; Induction motor; Ac motor; Feedback; High speed; Observer; Cost function; Control method; Predictive control; Control system; Sensorless control; predictive torque control; Experimental study; Motor control; Forecasting; Torque control; System simulation; Economic aspect; Reduced order model; Comparative study; Gain
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2011.2179812

In this paper, two kinds of observer-based sensorless predictive torque control methods are proposed. The predictive method is based on examining feasible voltage vectors (VVs) in a prescribed cost function. The VV that minimizes the cost function is selected. A novel robust prediction model is presented. The prediction model includes sliding mode feedbacks. The feedback gains are assigned by the H-inf method. Two kinds of observers are applied for flux and speed estimation, i.e., sliding mode full order observer and reduced order observer. In order to verify the proposed method, simulation and experimental results are presented in wide speed range. A comparison of the two methods is performed based on the results.