Application of wavelet transform to identify faulty IGBTs in 3-phase induction motor drives
- Resource Type
- Conference
- Authors
- Bandyopadhyay, I.; Das, S.; Purkait, P.; Das, P. P.; Koley, C.
- Source
- Proceedings of The 2014 International Conference on Control, Instrumentation, Energy and Communication (CIEC) Control, Instrumentation, Energy and Communication (CIEC), 2014 International Conference on. :296-300 Jan, 2014
- Subject
- Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Circuit faults
Insulated gate bipolar transistors
Continuous wavelet transforms
Induction motors
Resistance
Feature extraction
Fault diagnosis
PWM-VSI Drive
Park's Tranformation
Park's Vector Modulus(PVM)
IGBT
Continuous Wavelet Transform
Scatter Plot
- Language
Switching Devices (IGBT) used in Pulse Width Modulation (PWM) Voltage Source Inverter (VSI) feeding an induction motor often suffers from different types of faults due to ageing or performance in unfriendly environments. These faults which are caused due to improper contact points, problematic solder joints, poor connections etc are often less severe at their initial stages. Different variations of the above mentioned faulty cases in a PWM VSI driven induction motor are simulated in PSIM software and results are diagnosed to estimate condition of the inverter. Three phase line currents feeding the motor are recorded and transformed to d-q reference frame using Park's Transformation for further analysis. From d and q current components thus obtained, the PVMs and PVACs are computed. Applying Continuous wavelet Transform on PVACs certain features are extracted which are helpful to distinguish healthy condition from faulty situations and segregates different cases of individual faulty IGBTs.