Demagnetization analysis of Axial Flux Permanent Magnet motor under three phase short circuit fault

Bahador, Nooshin; Darabi, Ahmad; Hasanabadi, H.

doi:10.1109/pedstc.2013.6506728

Cited by 13 publications

(4 citation statements)

References 2 publications

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“…One of the main conditions that the Clarke transformation should comply with, is that the machine must be symmetrical. It is straightforward that this condition should also be valid in (20). As demagnetization faults often introduce asymmetries, deviations are expected at the flux magnitude, which could be expressed as ripple and a reduced flux average value.…”

Section: Detection Of Demagnetization Faults Using the Instataneous P...mentioning

confidence: 99%

Detection of Demagnetization Faults in Axial Flux Permanent-Magnet Synchronous Wind Generators

2022

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A new method for detecting demagnetization faults in axial flux permanent magnet synchronous wind generators is presented in this study. Demagnetization faults occur in the case of total or partial loss of the magnetic properties of one or more permanent magnets of the machine. Fault signatures appearing in the current or voltage signal due to a demagnetization fault can often be confused with those produced by eccentricity faults, making the discrimination between the two types of faults difficult. The proposed methodology is based on the analysis of the instant power spectrum of the generator, combined with an estimator to derive the permanent magnet flux, based on the machine equations. Short-Time Fourier Transform is proposed as the means for spectrum analysis to ensure performance during variations of the generator speed. Results derived from the experimental tests are presented, which show that the proposed methodology is capable of detecting demagnetization faults and distinguishing them from eccentricity ones under a wide variety of operating conditions.

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Section: Detection Of Demagnetization Faults Using the Instataneous P...mentioning

confidence: 99%

Detection of Demagnetization Faults in Axial Flux Permanent-Magnet Synchronous Wind Generators

2022

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“…During recent years, the demagnetization and the eccentricity fault have also been studied in the AFPM synchronous machine. More specifically [2,[8][9][10][11][12][13][14][15][16][17][18][19][20][21]] study the eccentricity fault, while [21][22][23][24][25][26][27][28][29][30] investigate the demagnetization fault in AFPM synchronous machines. In [31] a combined eccentricity and demagnetization fault in a double-sided AFPM synchronous machine using a time analytical model is presented.…”

Section: Introductionmentioning

confidence: 99%

Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator

Barmpatza

Kappatou

2020

Energies

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This article investigates the combined partial demagnetization and static eccentricity fault in an Axial Flux Permanent Magnet (AFPM) Synchronous Generator. The machine is simulated using 3D FEM, while the EMF spectrum is analyzed in order to export the fault related harmonics using the FFT analysis. Firstly, the partial demagnetization fault, without the coexistence of eccentricity, and both the static angular and axis eccentricity faults, without the coexistence of partial demagnetization, are studied. In the case of eccentricity fault, the phase EMF sum spectrum has also been used as a diagnostic mean, because, when only eccentricity fault exists in the generator (either angular or axis) new harmonics do not appear in the EMF spectrum. Secondly the combination of partial demagnetization fault with static axis and static angular eccentricity is investigated and different comparisons are made when the demagnetization and the eccentricity level changes. The investigation revealed that the combination of eccentricity and demagnetization creates new harmonics in the EMF spectrum. The novelty of the article is that these combined faults are studied for the first time in the international literature, and the phase EMF sum spectrum has not been previously used for eccentricity diagnosis in this machine type.

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“…In [7], the impact of fault resistance, for a transmission line compensated by series FACTS devices, has been investigated in the case of phase to earth fault. However, three phase electrical machines performances under various grid faults have been investigated in [8][9][10][11][12][13]. On the other hand, [14][15] discuss the performance of a grid-connected photovoltaic system under various grid faults.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Conduction Angle on Short Circuit Calculations in Case of Three Phase Fault for a FACTS Controlled Transmission Line in the Algerian Network

Zellagui¹,

Hassan²,

Chaghi³

2014

2014 International Conference on Automatic Control Theory and Application

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Demagnetization analysis of Axial Flux Permanent Magnet motor under three phase short circuit fault

Cited by 13 publications

References 2 publications

Detection of Demagnetization Faults in Axial Flux Permanent-Magnet Synchronous Wind Generators

Detection of Demagnetization Faults in Axial Flux Permanent-Magnet Synchronous Wind Generators

Study of a Combined Demagnetization and Eccentricity Fault in an AFPM Synchronous Generator

The Impact of Conduction Angle on Short Circuit Calculations in Case of Three Phase Fault for a FACTS Controlled Transmission Line in the Algerian Network

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