Journal
IEEE TRANSACTIONS ON ENERGY CONVERSION
Volume 25, Issue 2, Pages 312-318Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEC.2009.2037922
Keywords
Demagnetization; empirical-mode decomposition (EMD); fault diagnosis; finite-element analysis (FEA); Hilbert-Huang transform (HHT); permanent-magnet synchronous motor (PMSM)
Funding
- Spanish Ministry of Science and Technology [DPI 2004-03180]
- European Union [E04D027632CO]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available