NDLI: Fault diagnosis scheme for open-circuit faults in switched reluctance motor drives using fast Fourier transform algorithm with bus current detection

Content Provider	IET Digital Library
Author	Gan, Chun Wu, Jianhua Yang, Shiyou Hu, Yihua Cao, Wenping Si, Jikai
Abstract	Reliability of power converters is of crucial importance in switched reluctance motor drives used for safety-critical applications. Open-circuit faults in power converters will cause the motor to run in unbalanced states, and if left untreated, they will lead to damage to the motor and power modules, and even cause a catastrophic failure of the whole drive system. This study is focused on using a single current sensor to detect open-circuit faults accurately. An asymmetrical half-bridge converter is considered in this study and the faults of single-phase open and two-phase open are analysed. Three different bus positions are defined. On the basis of a fast Fourier transform algorithm with Blackman window interpolation, the bus current spectrums before and after open-circuit faults are analysed in details. Their fault characteristics are extracted accurately by the normalisations of the phase fundamental frequency component and double phase fundamental frequency component, and the fault characteristics of the three bus detection schemes are also compared. The open-circuit faults can be located by finding the relationship between the bus current and rotor position. The effectiveness of the proposed diagnosis method is validated by the simulation results and experimental tests.
Starting Page	20
Ending Page	30
Page Count	11
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 1, Jan (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2014.0945
Journal	IET Power Electronics
Publisher Date	2016-01-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asymmetrical Half-bridge Converter Blackman Window Interpolation Bus Current Spectrum Detection Bus Positions Catastrophic Failure Circuit Reliability Double Phase Fundamental Frequency Component Drive Electric Sensing Device Fast Fourier Transform Fast Fourier Transform Algorithm Fault Diagnosis Fault Diagnosis Scheme Integral Transforms Open-circuit Fault Detection Power Converter Power Converter Reliability Power Module Power Supplies to Apparatus Reliability Reluctance Motor Drive Rotor Position Rotors Safety-critical Application Sensing Device And Transducers Single Current Sensor Single-phase Open Fault Switched Reluctance Motor Drive Synchronous Machine Two-phase Open Fault Unbalanced State
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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