scholarly journals Fault Tolerant Control for Speed Sensor Failure in Induction Motor Drive based on Direct Torque Control and Adaptive Stator Flux Observer

2018 ◽  
Author(s):  
Younes Azzoug ◽  
Arezki Menacer ◽  
Remus Pusca ◽  
Raphael Romary ◽  
Tarek Ameid ◽  
...  
Keyword(s):  
Induction Motor ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Torque Control ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Sensor Failure ◽  
Flux Observer ◽  
Speed Sensor ◽  
Stator Flux

scholarly journals A robust diagnosis method for speed sensor fault based on stator currents in the RFOC induction motor drive

2020 ◽  
Vol 10 (3) ◽  
pp. 3035
Author(s):  
Cuong Dinh Tran ◽  
Pavel Brandstetter ◽  
Minh Chau Huu Nguyen ◽  
Sang Dang Ho ◽  
Bach Hoang Dinh ◽  
...  
Keyword(s):  
Induction Motor ◽  
Fault Tolerant ◽  
Current Model ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Sensor Failure ◽  
Sensor Fault ◽  
Essential Requirement ◽  
Speed Sensor ◽  
Diagnosis Method

A valid diagnosis method for the speed sensor failure (SSF) is an essential requirement to ensure the reliability of Fault-Tolerant Control (FTC) models in induction motor drive (IMD) systems. Most recent researches have focused on directly comparing the measured and estimated rotor speed signal to detect the speed sensor fault. However, using that such estimated value in both the fault diagnosis and the controller reconfiguration phases leads to the insufficient performance of FTC modes. In this paper, a novel diagnosis-technique based on the stator current model combined with a confusion prevention condition is proposed to detect the failure states of the speed sensor in the IMD systems. It helps the FTC mode to separate between the diagnosis and reconfiguration phases against a speed sensor fault. This proposed SSF diagnosis method can also effectively apply for IMs’ applications at the low-speed range where the speed sensor signal often suffers from noise. MATLAB/Simulink software has been used to implement the simulations in various speed ranges. The achieved results have demonstrated the capability and effectiveness of the proposed SSF method against speed sensor faults.

Direct-Torque-Control Fault-Tolerant Strategies for Three Induction Motor Drive Systems Operating Under Single-Phase Open-Circuit Fault

2020 ◽  
Author(s):  
Pedro H. M. Martins ◽  
Victor F. M. B. Melo ◽  
Gilielson F. da Paz ◽  
Isaac S. de Freitas
Keyword(s):  
Induction Motor ◽  
Single Phase ◽  
Fault Tolerant ◽  
Direct Torque Control ◽  
Open Circuit ◽  
Torque Control ◽  
Necessary Condition ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Drive Systems

This paper discusses Direct-torque-control(DTC)-based fault-tolerance strategiesapplied to three fault-tolerant induction motor drive systems when they operate under single-phase open-circuit fault. Despite the fact that these drive systems have already been discussed in the literature, the reported papers always make use of Field-oriented-control(FOC)-based fault compensation strategies. In this way, performed simulations show that DTC-based strategies are feasible and are able to provide circular flux trajectory, which is the necessary condition for the motor operate properly.

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