Effect of a CMV elimination PWM on stator current ripple in a dual two-level inverter fed induction motor drive

2012 ◽  
Author(s):  
K.Rama Chandra Sekhar ◽  
S. Srinivas
Keyword(s):  
Induction Motor ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Stator Current ◽  
Current Ripple

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.

Parameter Tuning for Sensorless Induction-Motor Drive Use Stator-Current-Based MRAS Estimator

2011 ◽  
Vol 383-390 ◽  
pp. 352-357
Author(s):  
Li Yong Yang ◽  
Liu Shuo
Keyword(s):  
Induction Motor ◽  
Control Method ◽  
Parameter Tuning ◽  
Control Technique ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Rotor Speed ◽  
Stator Current ◽  
Current Error ◽  
Speed Estimator

This paper proposes an analysis of the vector-controlled induction-motor (IM) drive with a novel modelreference adaptive system (MRAS)-type rotor speed estimator .In this scheme which stator-current-error-based MRAS is used instead of the rotor-flux-error-based MRAS scheme,an stator-current-error-based MRAS is used for estimate the IM rotor speed ,and this is used as feedback signals for the indirect field oriented control technique (IFOC),which is a widely used control method for Induction Motor drive (IM). For improving the dynamic characteristic of the system, it is very improtant for vector control to proceed parameter tuning.Some experimental results based on TMS 320F2812 DSP are provided to verify the proposed system performance in a low speed at no-load and load conditions.

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