Slot Numbering and Distributed Winding Effects Analysis on the Torque/Current Spectrum of Three-phase Wound-rotor Induction Machine Using Discrete Modeling Method

Naderi, Peyman; Taheri, Ali

doi:10.1080/15325008.2015.1057778

Cited by 12 publications

(15 citation statements)

References 28 publications

(28 reference statements)

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“…(6) [16][17][18]. It is notable that with regard to Figure 4, as the rotor position is particularly pertinent to stationery mechanical angle of stator and eccentricity coefficient (δ), Eq.…”

Section: Rotor and Stator's Slot Openingmentioning

confidence: 99%

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Eccentricity fault diagnosis in three‐phase‐wound‐rotor induction machine using numerical discrete modeling method

Naderi

Fallahi

2016

Int J Numerical Modelling

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SUMMARYIn recent years, several papers have dealt with eccentricity fault diagnosis considering the cage-induction machine while wound machine type has not been studied as a case. In this paper, eccentricity fault is studied based on the current/torque signature considering modified winding function approach (MWFA). A novel discrete model is introduced, and eccentricity fault is evaluated in both static and dynamic cases. To reach this aim, a numerical model is presented for slot openings, distributed windings and air-gap, thereby computing the machine's inductances using MWFA. Power spectral density (PSD) of stator's current and machine's vibration are analyzed for static and dynamic eccentricity diagnosis and the finite element method (FEM) is utilized to precisely verify the proposed method. Mathematical-based model with consideration of both slot openings and non-sinusoidal winding function effects are the advantages of the proposed method over the previous researches in this field. Moreover, proposed method, which is based on mathematical modeling, could be easily applied to other types of electrical machines, and this feature is regarded as another key point of this paper.

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Section: Rotor and Stator's Slot Openingmentioning

confidence: 99%

“…However, the proper function should be considered for slot opening to achieve the higher accuracy of the modeling. Relative figures are depicted in Figure 3, and relevant mathematical model has been written in (1) which were proposed in [16][17][18].…”

Section: Rotor and Stator's Slot Openingmentioning

confidence: 99%

Eccentricity fault diagnosis in three‐phase‐wound‐rotor induction machine using numerical discrete modeling method

Naderi

Fallahi

2016

Int J Numerical Modelling

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“…As shown in Figure 1, reference of stator circumambient (θ s = 0) corresponds with the center of winding "A" [27] and the reference of rotor circumambient P. NADERI (θ r = 0) is according to maximum air gap length [26,28]. Considering N s turn for each pole per phase, N s /5 turns will be achieved for each slot.…”

Section: Synrm's Samples For Healthy and Faulty Behavior Studyingmentioning

confidence: 99%

“…These harmonics produce non-smooth torque with significant ripple. Furthermore, appeared components because of slot openings are a subset of produced components by non- ever, there are known methods for reduction of mentioned components, which has been listed in Table V [27,28].…”

Section: Equations With Discrete Machine Modelingmentioning

confidence: 99%

Torque/current spectral analysis for healthy and eccentricity faulty synchronous reluctance machine using mathematical modeling method

Naderi

2015

Int. Trans. Electr. Energ. Syst.

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SUMMARYIn this research, considering slot opening and distributed winding effects, torque ripple analysis is studied for four separate synchronous reluctance machines (SynRMs) under health and eccentricity fault conditions using a mathematical method. A finite element method (FEM) validated model is produced by mathematical modeling, and numerical method is used for the machine's behavior studying with voltage source supplying. With this aim, the machine's parameters have been computed under health and eccentricity fault conditions, using modified winding function theory (MWFT). A method of dynamic and static eccentricity fault diagnosis is proposed, which uses machine vibration analysis, and the results suggest that the eccentricity fault does not have any significant effect on the machine's currents. Moreover, unbalance magnetic pull (UMP) is computed under eccentricity fault conditions and mechanical un-stability is shown. Mathematical base model and voltage source machine supply and also presenting a discrete machine modeling method are the main advantages of this paper compared with other similar works that are usually FEM-based studies or have been based on current source power supply. The research is applicable to healthy and faulty machine behavior, and the methodical modeling is obviously applicable to other machines.

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“…However, several papers have dealt with healthy and faulty machines and the power spectral density (PSD) of the machine's parameters so far. In [25][26][27] FEM and WFA were applied to study the wound-rotor induction and also synchronous reluctance machines and the PSD of torque and stator currents was used to analyze the machines performance in healthy and faulty conditions neglecting the saturation effect. In [28] the saturation effect of teeth and slot opening effect was considered simultaneously and in [29], broken bar fault has been studied for cage induction machines without slot opening effect.…”

Section: Introductionmentioning

confidence: 99%

Slot Numbering and Distributed Winding Effects Analysis on the Torque/Current Spectrum of Three-phase Wound-rotor Induction Machine Using Discrete Modeling Method

Cited by 12 publications

References 28 publications

Eccentricity fault diagnosis in three‐phase‐wound‐rotor induction machine using numerical discrete modeling method

Eccentricity fault diagnosis in three‐phase‐wound‐rotor induction machine using numerical discrete modeling method

Torque/current spectral analysis for healthy and eccentricity faulty synchronous reluctance machine using mathematical modeling method

Cage-rotor induction motor inter-turn short circuit fault detection with and without saturation effect by MEC model

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