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

A sensor fault detection and isolation unit is considered for induction-motor drives based on an adaptive observer with rotor-resistance estimation. Generally, closed-loop induction-motor drives with voltage-source inverters use a speed or position, a dc-link voltage, and two or three phase-current sensors. In the proposed fault-detection and isolation unit, the estimated phase currents and rotor resistance are sent to a decision-making unit, which identifies the faulty sensor type based on a deterministic rule base. In the case of a current-sensor failure, it also detects the phase with erroneous sensor output. It is shown that, unlike the other proposed model-based fault-tolerant systems, using a bank of observers is not necessary, and only one current observer with rotor-resistance estimation is sufficient for isolation of all sensors' faults. The accuracy of the proposed approach is analytically proved. Furthermore, extensive simulation and experimental tests verify the effectiveness of the proposed method at different operating conditions.

[1]  Hansjörg Kapeller,et al.  Robust Rotor Fault Detection by Means of the Vienna Monitoring Method and a Parameter Tracking Technique , 2008, IEEE Transactions on Industrial Electronics.

[2]  Christopher Edwards,et al.  Adaptive Sliding-Mode-Observer-Based Fault Reconstruction for Nonlinear Systems With Parametric Uncertainties , 2008, IEEE Transactions on Industrial Electronics.

[3]  Guy Clerc,et al.  Classification of Induction Machine Faults by Optimal Time–Frequency Representations , 2008, IEEE Transactions on Industrial Electronics.

[4]  Friedrich Wilhelm Fuchs,et al.  Current Sensor Fault Detection, Isolation, and Reconfiguration for Doubly Fed Induction Generators , 2009, IEEE Transactions on Industrial Electronics.

[5]  Jung-Ik Ha,et al.  A hybrid speed estimator of flux observer for induction motor drives , 2006, IEEE Transactions on Industrial Electronics.

[6]  Jiabin Wang,et al.  Enhanced Optimal Torque Control of Fault-Tolerant PM Machine Under Flux-Weakening Operation , 2010, IEEE Transactions on Industrial Electronics.

[7]  O. Carlson,et al.  Control Algorithms for a Fault-Tolerant PMSM Drive , 2007, IEEE Transactions on Industrial Electronics.

[8]  Tooraj Abbasian Najafabadi,et al.  An Adaptive Flux Observer With Online Estimation of DC-Link Voltage and Rotor Resistance For VSI-Based Induction Motors , 2010, IEEE Transactions on Power Electronics.

[9]  J. Klima Time and frequency domain analysis of fault-tolerant space vector PWM VSI-fed induction motor drive , 2005 .

[10]  Hainan Wang Automatic sensor fault diagnosis and controller reconfiguration for induction motor drives sensor fault-tolerance , 2004 .

[11]  Demba Diallo,et al.  Advanced Fault-Tolerant Control of Induction-Motor Drives for EV/HEV Traction Applications: From Conventional to Modern and Intelligent Control Techniques , 2007, IEEE Transactions on Vehicular Technology.

[12]  Demba Diallo,et al.  A fault-tolerant control architecture for induction motor drives in automotive applications , 2004, IEEE Transactions on Vehicular Technology.

[13]  Gérard-André Capolino,et al.  Advances in Diagnostic Techniques for Induction Machines , 2008, IEEE Transactions on Industrial Electronics.

[14]  B. Singh,et al.  A review of stator fault monitoring techniques of induction motors , 2005, IEEE Transactions on Energy Conversion.

[15]  Edouard Laroche,et al.  Methodological Insights for Online Estimation of Induction Motor Parameters , 2008, IEEE Transactions on Control Systems Technology.

[16]  Riccardo Marino,et al.  On-line stator and rotor resistance estimation for induction motors , 2000, IEEE Trans. Control. Syst. Technol..

[17]  Janusz Nieznanski,et al.  Open-Transistor Fault Diagnostics in Voltage-Source Inverters by Analyzing the Load Currents , 2007, IEEE Transactions on Industrial Electronics.

[18]  Slobodan N. Vukosavic,et al.  Sensorless induction motor drive with a single DC-link current sensor and instantaneous active and reactive power feedback , 2001, IEEE Trans. Ind. Electron..

[19]  Friedrich Wilhelm Fuchs,et al.  Doubly Fed Induction Generator Model-Based Sensor Fault Detection and Control Loop Reconfiguration , 2009, IEEE Transactions on Industrial Electronics.

[20]  Richard J. Povinelli,et al.  Induction Machine Broken Bar and Stator Short-Circuit Fault Diagnostics Based on Three-Phase Stator Current Envelopes , 2008, IEEE Transactions on Industrial Electronics.

[21]  Demba Diallo,et al.  A Fuzzy-Based Approach for the Diagnosis of Fault Modes in a Voltage-Fed PWM Inverter Induction Motor Drive , 2008, IEEE Transactions on Industrial Electronics.

[22]  Raphaël Romary,et al.  Stator-Interlaminar-Fault Detection Using an External-Flux-Density Sensor , 2010, IEEE Transactions on Industrial Electronics.

[23]  Pavel Vaclavek,et al.  Lyapunov-function-based flux and speed observer for AC induction motor sensorless control and parameters estimation , 2006, IEEE Transactions on Industrial Electronics.

[24]  Ali Keyhani,et al.  Sliding-Mode Flux Observer With Online Rotor Parameter Estimation for Induction Motors , 2007, IEEE Transactions on Industrial Electronics.

[25]  Ezio Bassi,et al.  Stator Current and Motor Efficiency as Indicators for Different Types of Bearing Faults in Induction Motors , 2010, IEEE Transactions on Industrial Electronics.