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Content Provider | IET Digital Library |
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Author | Yang, Wenhao Gou, Bin Lei, Yu Wang, Jun |
Abstract | Switched reluctance motor (SRM) is a competitive solution for aircraft and automotive applications due to its fault-tolerant capabilities and robust configuration. Power converter is a key component in SRM drives, but it prone to faults. In this study, a new and fast diagnosis method for short-circuit fault of the SRM converter is proposed based on the mixed logical dynamic (MLD) model and residual generation. Effects of short-circuit fault on SRM drives are analysed in detail. The MLD model of an asymmetrical half-bridge converter of SRM drives is presented to evaluate the currents of the power converter. The short-circuit faulty switch is identified by analysing the system residual, achieved by comparing the outputs of the MLD model and the sensor measurements. In contrast to other methods, the presented method requires no additional hardware but only measured phase currents and command signals, which are available in the control system. Simulation results confirm the effectiveness of the proposed diagnosis method. It is shown that such diagnosis method can identify the faulty switch of the power converter in a few milliseconds, which is important to avoid catastrophic consequences. It is fast, reliable and easy for industrial applications due the low-computational requirement. |
Starting Page | 2137 |
Ending Page | 2141 |
Page Count | 5 |
Volume Number | 2019 |
e-ISSN | 20513305 |
Issue Number | Issue 16, Mar (2019) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8575 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2018-10-26 |
Access Restriction | Open |
Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Subject Keyword | Aircraft Asymmetrical Half-bridge Converter Automotive Application Control of Electric Power System Drive Fast Diagnosis Method Fault Diagnosis Fault Tolerance Fault-tolerant Capabilities Machine Control MLD Model Model-based Approach New Diagnosis Method Power Converter Reluctance Motor Drive Reluctance Motors Residual Generation Short Switch Fault Diagnosis Method Short-circuit Fault Short-circuit Faulty Switch SRM Converter SRM Drive Switched Reluctance Motor Drive Synchronous Machine |
Content Type | Text |
Resource Type | Article |
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