Non‐linear circuit based model of permanent magnet synchronous machine under inter‐turn fault: a simple approach based on healthy machine data

Belguerras, Lamia; Arellano-Padilla, J.; Arumugam, Puvan; Hamiti, Tahar; Mezani, Smaïl; Gerada, Chris

doi:10.1049/iet-epa.2015.0443

Cited by 15 publications

(5 citation statements)

References 28 publications

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“…It is still conducting when the series EMF of three-phase windings is at its maximum. However, it is also noted that although the flux linkage generated by the stator field current and [3,4,7,8,13,16,17,20] other winding currents will still induce an EMF in the faulty phase, the armature current of phase 11 will always be zero after the fault due to the lack of leads at both ends of the winding and the inability to form a conducting circuit with the load.…”

Section: Analysis Of Armature Current Under the Awopfmentioning

confidence: 99%

“…For the traditional three-phase brushless exciter, experts and scholars have carried out a lot of research on diagnosis methods of different kinds of faults, such as rotating rectifier diode open-circuit fault [2][3][4][5], armature windings short-circuit fault [6][7][8][9] and field winding short-circuit fault [10,11]. Based on model analysis, signal processing, artificial intelligence and other analysis methods, the fault diagnosis method using electrical signals and physical signals (such as pressure, vibration and temperature) are proposed.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, there are also some references dealing with the fault analysis of the multiphase brushless exciter, mainly involving the fault analysis of rectifier [12][13][14], analysis of open-phase operation [15][16][17][18], inter-turn short-circuit of stator and rotor [19][20][21], sudden short-circuit of DC side [22] and other aspects. However, References [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] are mainly related to the three-phase brushless exciter and multi-phase star-type brushless exciters. Up to now, there is no relevant research been performed on the AWOPF of multi-phase brushless exciters with annular winding structure.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of armature winding open‐phase fault in multi‐phase annular brushless exciter at nuclear power plant

Chen

Wang³

et al. 2021

IET Electric Power Appl

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The multi-phase annular brushless exciter (MPABE) of nuclear power plants has suffered numerous armature winding open-phase faults (AWOPF) in the field operation. In order to achieve reliable protection of the MPABE, its AWOPF is systematically studied through theoretical analysis, simulation calculation and model machine experiments. First, proceeding from the armature current waveform in normal operation and the influence of the AWOPF on it, the armature reaction magnetomotive force (MMF) is analysed deeply. Then, the theoretical analysis about the harmonic electromotive force (EMF) induced by armature reaction MMF on the field winding is presented, obtaining the harmonic characteristics of field current: the even-order field harmonic currents increase obviously under the AWOPF. Finally, correlate experiments and simulations were performed on a customized experimental prototype. The experimental and simulation results are consistent and verify the conclusion of the theoretical analysis, which can serve as a theoretical basis for the monitoring and diagnosis method of the AWOPF in the MPABE. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Analysis Of Armature Current Under the Awopfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of armature winding open‐phase fault in multi‐phase annular brushless exciter at nuclear power plant

Chen

Wang³

et al. 2021

IET Electric Power Appl

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“…In [14], the PMSMs inter-turn fault is comprehensively reviewed by WFT neglecting the core nonlinearity and saturation effect. pulse-width modulation current ripple is analysed for a PMSM under inter-turn fault in [15] neglecting saturation effect, and the inter-turn fault is investigated in [16][17][18] without modelling of core permeability. The impact of slot and pole numbers under inter-turn fault in a PMSM is studied in [19] without considering the effect of the saturation.…”

Section: Introductionmentioning

confidence: 99%

Magnetic‐equivalent‐circuit approach for inter‐turn and demagnetisation faults analysis in surface mounted permanent‐magnet synchronous machines using pole specific search‐coil technique

Naderi

2018

IET Electric Power Applications

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Magnetic-equivalent-circuit model for surface mounted permanent-magnet synchronous machines in both healthy and faulty cases is presented in this study, where both saturation effect and space harmonics are considered. Pole numbers, magnets and slot numbers can be chosen arbitrarily in the proposed model, and the behavior of the machine can be studied under various kinds of faults by a single model. Demagnetization, as well as inter-turn short short-circuit faults of the stator windings, are modelled, and a fault detection method is proposed. It is shown that the demagnetization fault is not detectible by stator current analysis, therefore an additional pole specific coil is considered in this study as a search coil. For modelling, the differential equations representing the electrical part of the PMSM model are converted into an algebraic type using the wellknown trapezoidal technique and are solved simultaneously together with the non-linear magnetic equations using the Newton-Raphson method. It is shown that the presented model in this study is capable of effective modelling of the healthy and faulty machine under mentioned faults by a single model, thus reducing the computational complexity of the model. The effectiveness of the proposed MEC model is verified using finite-element method via Maxwell software.

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“…A fault model of an inverter‐fed permanent magnet synchronous motor has been introduced using digital signal processor under various fault conditions [21]. Manufacturer data based fast dynamic model of a saturated permanent magnet synchronous machine under the stator winding inter‐turn fault, has been used for fault identification in global simulation environment [22]. High‐frequency injection and space modulation profiling technique based look‐up table analysis has been used to monitor machine's incremental inductances, for winding fault detection in variable speed drive systems [23].…”

Section: Introductionmentioning

confidence: 99%

Inter‐turn short‐circuit assessment of DC motor used in railway locomotive

Ray

Chattopadhyay²,

Sharma

et al. 2018

IET Electric Power Applications

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This study deals with inter-turn short-circuit assessment of DC traction motors used in railway locomotives. This has been done by analysing input current spectra of rectifier unit feeding the traction motor. The analysis includes multi-resolution analysis and discrete wavelet transform (DWT) of current spectra to calculate approximate and detailed coefficients and then to evaluate the skewness, kurtosis and root mean square values. Variation of those values with respect to percentage of inter-turn short circuit at different DWT decomposition levels has been observed. A number of curves have been chosen for fault assessment based on the observations. Deviations from normal condition have also been observed by logic matrix. Depending on the features obtained, normal and different percentages of short in the traction motor windings have been classified and an algorithm has been proposed accordingly. Case study has been carried out on Indian WAP4 locomotive, wherein the input current to the rectifiers has been analysed and efficacy of the proposed algorithm has been validated. If for the locomotives, these parameters are monitored, percentage of inter-turn short circuit in the winding may be assessed far before massive system degradation occurs.

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Non‐linear circuit based model of permanent magnet synchronous machine under inter‐turn fault: a simple approach based on healthy machine data

Cited by 15 publications

References 28 publications

Analysis of armature winding open‐phase fault in multi‐phase annular brushless exciter at nuclear power plant

Analysis of armature winding open‐phase fault in multi‐phase annular brushless exciter at nuclear power plant

Magnetic‐equivalent‐circuit approach for inter‐turn and demagnetisation faults analysis in surface mounted permanent‐magnet synchronous machines using pole specific search‐coil technique

Inter‐turn short‐circuit assessment of DC motor used in railway locomotive

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