Low-speed performance of the stator current-based MRAS estimator with FL controller in the sensorless induction motor drive

2008 ◽  
Author(s):  
Mateusz Dybkowski ◽  
Teresa Orlowska-Kowalska
Keyword(s):  
Induction Motor ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Low Speed ◽  
Stator Current ◽  
Speed Performance

scholarly journals Simple diagnostic technique of a single IGBT open-circuit faults for a SVM-VSI vector controlled induction motor drive

2015 ◽  
Vol 63 (1) ◽  
pp. 281-288 ◽  
Author(s):  
T. Orlowska-Kowalska ◽  
P. Sobanski
Keyword(s):  
Induction Motor ◽  
Diagnostic System ◽  
Diagnostic Technique ◽  
Open Circuit ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Stator Current ◽  
Wide Range ◽  
False Diagnosis ◽  
Signal Normalization

Abstract In this paper a simple diagnostic system for a single IGBT open-circuit faults for a two level voltage inverter-fed field oriented controlled induction motor drive was presented. A fault diagnostic procedure is carried out by utilizing an analysis of a stator current vector trajectory in α-β coordinates. An extraction of the failure information is based on monitoring of an angle between the stator current space vector and the axis. Thanks to a diagnostic signal normalization, high robustness to false diagnosis alarms is guaranteed. To confirm the proposed method, simulation results under a wide range working condition of the induction motor drive were presented.

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