Fault detection by means of Hilbert-Huang transform of the stator current in a PMSM with demagnetization
This paper presents a novel method to diagnose demagnetization in permanent-magnet synchronousmotor (PMSM). Simulations have been performed by 2-D finite-element analysis in order to determine the current spectrum and the magnetic flux distribution due to this failure. The diagnostic just based on m...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2010 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/9503 |
| Acceso en línea: | https://hdl.handle.net/2117/9503 https://dx.doi.org/10.1109/TEC.2009.2037922 |
| Access Level: | acceso abierto |
| Palabra clave: | Electric motors, Synchronous Brushless direct current electric motors Magnetic flux Hilbert–Huang transform Motors elèctrics sincrònics Levitació magnètica Àrees temàtiques de la UPC::Enginyeria mecànica::Motors::Motors elèctrics |
| Sumario: | This paper presents a novel method to diagnose demagnetization in permanent-magnet synchronousmotor (PMSM). Simulations have been performed by 2-D finite-element analysis in order to determine the current spectrum and the magnetic flux distribution due to this failure. The diagnostic just based on motor current signature analysis can be confused by eccentricity failure because the harmonic content is the same. Moreover, it can only be applied under stationary conditions. In order to overcome these drawbacks, a novel method is used based upon the Hilbert–Huang transform. It represents time-dependent series in a 2-D time–frequency domain by extracting instantaneous frequency components through an empirical-mode decomposition process. This tool is applied by running the motor under nonstationary conditions of velocity. The experimental results show the reliability and feasibility of the methodology in order to diagnose the demagnetization of a PMSM. |
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