Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"Current signature analysis"”.
-
Impact of pulse width modulation schemes In eccentricity fault detection using current signature analysis
… and potential failure if undetected. Motor Current Signature Analysis (MCSA) is a widely used technique for diagnosing such faults, particularly in line-fed motors. However, the effectiveness of MCSA based on the modulation scheme employed in inverter-driven setup is underexplored. This …
-
Condition monitoring of induction motors in the nuclear power station environment
… explained with the main focus being on Motor Current Signature Analysis (MCSA) and the various methods associated with it. Three analysis methods were selected for further study, namely, Current Signature Analysis, Instantaneous Power Signature Analysis (IPSA) and Motor Square Current …
-
Design and implementation of variable speed wind energy induction generator systems for fault studies
… measurements and by using a steady state fault analysis technique (Motor Current Signature Analysis). For variable speed wind generation, there are two systems using induction generators. The first consist of a squirrel cage induction generator, which uses back-to-back converters in the stator …
-
Modelling and detection of faults in axial-flux permanent magnet machines
… test-rig, predicting and analysing fault signatures using both finite element analysis and experimental analysis. In the detection, the motor current signature analysis, vibration analysis and electrical impedance spectroscopy are applied. Attention is paid to fault-feature extraction and …
-
Impact analysis of motor faults on the DC Bus in electric vehicle drivetrains
This study investigated the analysis of electric vehicle drivetrains in the presence of a motor fault within a powertrain. The investigation was conducted utilizing a test rig that facilitated the controlled implementation of known faults in induction motors connected to an electric vehicle …
-
Non-intrusive efficiency estimation of inverter-fed induction machines
… motors that is based on harmonic regression analysis, harmonic equivalent circuit parameter estimation and harmonic loss analysis using limited measured data. Firstly, considerations for inverter-fed induction motor equivalent circuit modelling and parameter estimation techniques suitable for …
-
Detection of faults in a scaled down doubly-fed induction generator using advanced signal processing techniques.
… of the machine. In each scenario, the fault signatures have been characterised by analyzing the stator current, rotor current, and the DFIG controller signals using the motor current signature analysis (MCSA) and discrete wavelet transform (DWT) analysis techniques to detect the dominant …
-
Application of Sweep Frequency Response Analysis and Locked-Rotor Test for Stator Winding Inter-Turn and Broken Rotor Bar Fault Detection of Squirrel-Cage Induction Motors
… One of the more popular techniques is motor current signature analysis (MCSA) [9]- [10], which analyses the spectral content of the stator current in determining the state of health. A popular technique for assessing the stator winding insulation is the DC Hipot test, which involves applying …
-
Condition Monitoring of VSD-fed Induction Motors
… types, the voltage source inverter (VSI) and the current source inverter (CSI). VSI is used for most induction motor drive applications due to its simpler control and efficient operation in addition to its low weight, cost, and volume. Despite their high reliability and robustness, induction …