Detection and Isolation of Speed-, DC-Link Voltage-, and Current-Sensor Faults Based on an Adaptive Observer in Induction-Motor Drives

2011 ◽  
Vol 58 (5) ◽  
pp. 1662-1672 ◽  
Author(s):  
Tooraj Abbasian Najafabadi ◽  
Farzad R. Salmasi ◽  
Parviz Jabehdar-Maralani
Keyword(s):  
Induction Motor ◽  
Motor Drives ◽  
Adaptive Observer ◽  
Current Sensor ◽  
Sensor Faults ◽  
Induction Motor Drives

scholarly journals Design of Robust Adaptive Observer against Measurement Noise for Sensorless Vector Control of Induction Motor Drives

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Asma Boulmane ◽  
Youssef Zidani ◽  
Mohammed Chennani ◽  
Driss Belkhayat
Keyword(s):  
Induction Motor ◽  
Position Control ◽  
Motor Drives ◽  
Measurement Noise ◽  
Adaptive Observer ◽  
Control Technique ◽  
Induction Motor Drives ◽  
Sensor Noise ◽  
Parametric Variation ◽  
Luenberger Observer

Position control in electrical drives is a challenging problem which is complicated by sensor noise and unknown disturbances. This paper proposes a new cascade sensorless speed control technique for induction motor drives suitable for electric vehicle applications using the full-order adaptive Luenberger observer that is insensitive to measurement noise and parametric variation. The adaptive speed law is obtained by the Lyapunov method using the estimated currents and fluxes. This technique ensures the stability of the induction motor considered as nonlinear dynamic system. Since the Luenberger observer works on deterministic environment, and it is most effective when sensor noise is limited, the present study aims to design a robust observer insensitive to measurement noise and parametric variation integrated in a cascade structure. The observer allows the filtering of the measured currents. To highlight the advantages of the new scheme, a comparative study and spectrum analysis will be presented. The proposed structure is verified using MATLAB/Simulink.

scholarly journals Fault Tolerant Control of Induction Motor Drives Subject to Rotor Resistance Adaptation

2016 ◽  
Vol 1 (1) ◽  
pp. 11-22
Author(s):  
N. Boumalha ◽  
D. Kouchih ◽  
M. Tadjine ◽  
M.S. Boucherit
Keyword(s):  
Induction Motor ◽  
Fault Tolerant ◽  
Induction Machine ◽  
Fault Tolerant Control ◽  
Motor Drives ◽  
Lyapunov Theory ◽  
Adaptive Observer ◽  
Induction Motor Drives ◽  
Rotor Resistance ◽  
And Performance

This paper describes the synthesis of a vector fault tolerant control of induction motor drives using an adaptive observer. This observer is used to detect the rotor resistance and flux components using the stator terminal voltages and currents. The rotor resistance is adapted using a new algorithm which does not imply a high computational load. Stability analysis based on Lyapunov theory is performed in order to guarantee the closed loop stability. The rotor resistance is used for the correction of the controllers and the rotor time constant. To verify the tolerance and the applicability of this control, we consider the stator inter-turn fault which is frequently encountered in practice. An analytical method for the modelling of this fault is presented. The equations which describe the transient as well as steady state behavior of unsymmetrical induction machine including the computation of machine inductances are presented. These inductances are calculated analytically using the magnetic field distribution through the machine air-gap. Simulation results are provided to evaluate the consistency and performance of the proposed fault tolerant control of induction motor based vector control.

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