Title :
Second-order sliding mode based sensor fault-tolerant control of induction motor drives
Author :
Kommuri, Suneel K. ; Veluvolu, Kalyana C. ; Defoort, M.
Author_Institution :
Sch. of Electron. Eng., Kyungpook Nat. Univ., Daegu, South Korea
Abstract :
This paper presents a fault-tolerant control method for induction motor (IM) based on higher order sliding mode (HOSM) observer. Traditional current control involves the regulation of the d-q synchronous reference frame currents with or without a decoupling compensator. The compensation voltages, which require speed and motor parameters cancel the coupling terms. When the speed is not available, this approach leads to a degraded performance of the controller. In the proposed scheme, a HOSM observer is designed to estimate the compensation voltages, which further estimates the motor speed through algebraic calculations. The estimated speed is then employed as feedback when speed sensor is faulty. Simulations on a 1/4-hp three-phase IM highlights the performance of the proposed approach.
Keywords :
algebra; electric current control; fault tolerant control; induction motor drives; machine control; variable structure systems; HOSM observer; IM drives; algebraic calculations; current control; d-q synchronous reference frame currents; decoupling compensator; higher order sliding mode observer; induction motor drives; motor speed estimation; second-order sliding mode based sensor fault-tolerant control; speed sensor; Magnetic analysis; Magnetic separation; Observers; Robustness; Rotors; Stators; Voltage control; Induction motor (IM); current control; higher-order sliding mode (HOSM); sensor fault-tolerant control; speed estimation;
Conference_Titel :
Industrial Instrumentation and Control (ICIC), 2015 International Conference on
Conference_Location :
Pune
DOI :
10.1109/IIC.2015.7150804