Abstract
Switched reluctance motors are tremendously increasing in usage. Monitoring the motor performance onli ne is essential, in order to maintain the health of th e motor as well as for a continual application proc ess carried out by the SRM. Though certain fault detection methods are available based on comparator circuits, tho se methods are inefficient, because they need human at tention to identify the faults. In this study, we p ropose a wavelet based SRM power drive fault detection and classification using BPN method. The currents flowin g in different phases and the known states of all power switches helps us to find out the magnitude of the converter supply current, since an asymmetric bridge converte r is used. In this study, short and open circuit fa ult occurrences in the converter power switches are pre sented for various coils of the stator windings. Th e proposed technique is able to detect these faults a nd identify the affected stator phase as well as th e faulty arm along with the the time instant of fault occurrence .
Highlights
Switched reluctance motors are tremendously increasing in usage
We propose a wavelet based Switched Reluctance Motor (SRM) power drive fault detection and classification using Back Propagation Network (BPN) method
Short and open circuit fault occurrences in the converter power switches are presented for various coils of the stator windings
Summary
At the physical damage of motor phases, vice versa At this these conditions, the phase current may not exceed and situations it is wise to implement a strategy to detect the reach the magnitude of the short circuit current and faults to save the motor and to increase the motor life a sudden failure may not occur. The phase current may not exceed and situations it is wise to implement a strategy to detect the reach the magnitude of the short circuit current and faults to save the motor and to increase the motor life a sudden failure may not occur In SRM, when a particlar phase current increases, it leads to a saturation and there exists a decrease in the inductance amplitude This sounds more when the rotor and stator pole are aligned together. There are two transistor switches and two diodes are connected to each phase (Gameiro and Cardoso, 2012)
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