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Motor Current Signature Analysis-Based Permanent Magnet Synchronous Motor Demagnetization Characterization and Detection
- Source :
- Machines, Volume 8, Issue 3, Machines, Vol 8, Iss 35, p 35 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- Neodymium-boron (NdFeB) permanent magnets (PMs) have been widely studied in the past years since they became the material of choice in permanent magnet synchronous machines (PMSMs). Although NdFeB PMs have a better energy density than other types of magnets and are cost-effective, their magnetization is very sensitive to the PMSM operating conditions, in particular temperature, where the irreversible demagnetization degree increases over time. Therefore, it is important to characterize and diagnose demagnetization at an early stage. In this context, this paper proposes a two-step analysis study dealing with both uniform and partial demagnetization. A 2D finite element method-based (FEM) approach is used for demagnetization characterization, and then a PMSM motor current signature analysis (MCSA) approach, based on fast Fourier transform (FFT), is considered where fault cases harmonics are considered as faults indices to detect demagnetization. In some situations, the proposed two-step approach achieved results that clearly allow distinguishing and characterizing demagnetization. Indeed, a local demagnetization introduces specific sub-harmonics while a uniform demagnetization leads to the current amplitude increase for a given torque.
- Subjects :
- Control and Optimization
Computer science
diagnosis
lcsh:Mechanical engineering and machinery
020209 energy
Context (language use)
02 engineering and technology
finite element analysis
Fault (power engineering)
Industrial and Manufacturing Engineering
Fault detection and isolation
Control theory
permanent magnet synchronous motor
0202 electrical engineering, electronic engineering, information engineering
Computer Science (miscellaneous)
Torque
lcsh:TJ1-1570
Electrical and Electronic Engineering
Mechanical Engineering
020208 electrical & electronic engineering
Demagnetizing field
fault detection
Neodymium magnet
Control and Systems Engineering
Magnet
Harmonics
demagnetization
motor current signature analysis
Subjects
Details
- Language :
- English
- ISSN :
- 20751702
- Database :
- OpenAIRE
- Journal :
- Machines
- Accession number :
- edsair.doi.dedup.....60f75456096b32f14e6e6556bf3c0607
- Full Text :
- https://doi.org/10.3390/machines8030035