Performance Analysis of a Three-Phase Induction Machine With Inclined Static Eccentricity

Li, Xiaodong; Wu, Qing; Nandi, S.

doi:10.1109/tia.2006.889806

Cited by 100 publications

(49 citation statements)

References 22 publications

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“…The study of mechanical losses due to the bearings, fan and air friction has been made, getting reasonable values compared to the rest of conventional motors [1]. The inertias are very similar to squirrel cage motor values; and in the worst case a light inertia increase in the spiral sheet motor are detected, which have not the rotor machined.…”

Section: Mechanical Inertias and Lossesmentioning

confidence: 82%

“…The rotating magnetic field created by the stator, induces currents parallel to the shaft and so upright to the rotor sheets [1]. Those currents cannot flow between the sheets if they are electrically isolated, being necessary the intervention of conventional squirrel cage rings to close the electric circuit and thus the rotor currents can circulate.…”

Section: Introductionmentioning

confidence: 99%

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Three-phase induction motor with spiral sheet rotor

Rosas¹,

Aragones²,

Marin³

2008

2008 IEEE International Symposium on Industrial Electronics

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Abstract-Improvements on the torque with low currents using rotor with spiral sheets are analyzed. Several rotors and stators have been built combining different constructive and mechanical characteristics of the related elements: inertias, constructive materials, geometrical shapes of the sheets and geometrical disposition of the sheets. These different types of motors have been simulated using computer aided tools and then tested in the laboratory. Finally, four stators (1000, 1500, 1500-type A, and 3000 rpm) having the same constructive parameters, have been simulated and tested with the following rotors types: solid rotor, solid rotor with diamagnetic rings, drag cup, and simple and double squirrel cage rotor; these results have been compared to those obtained with the seven variants of spiral sheet rotor presented in this paper.

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Section: Mechanical Inertias and Lossesmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Three-phase induction motor with spiral sheet rotor

Rosas¹,

Aragones²,

Marin³

2008

2008 IEEE International Symposium on Industrial Electronics

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“…Mean radius function depends on the geometry of the air gap. In many studies, this function has been considered to be constant [7,8,[13][14][15][16][17][18][19][20][21][22]. Fig.…”

Section: Mixed Misalignment Modelingmentioning

confidence: 99%

“…This method was used to calculate the mutual inductance of a three-phase induction machine under static inclined eccentricity condition. Different inclined eccentricities in induction machines have been previously documented [19][20][21][22]. In these models, only static inclined eccentricity is considered.…”

Section: Introductionmentioning

confidence: 99%

A Modified Model of Squirrel Cage Induction Machine Under General Rotor Misalignment Fault

Akbari¹

2013

PIER B

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Abstract-A great deal of researches have so far been conducted on the analysis of eccentricity in induction machines. However, they mostly consider radial non-uniformity and neglect non-uniformity in the axial direction, but in practice, the axial non-uniformity due to rotor misalignment faults is quite common. This paper presents a modified model of a three-phase squirrel cage induction machine under different rotor misalignment conditions. For this purpose, general expressions for air gap and mean radius of induction machine, considering axial non-uniformity, have been developed. The proposed model is able to calculate the time varying inductances versus rotor angle for three-phase squirrel cage induction machines under general rotor misalignment, including static, dynamic and mixed rotor misalignment in the frame of a single program. Simulation results were verified by the experimental ones.

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“…Faiz et al also calculated the stator inductances considering the saturation effect in [9]. Later, Li et al [10] investigated the performance of a three-phase induction machine with nonuniform SE along axial direction or inclined SE. A variant of MWFA was applied to calculating the inductances.…”

Section: Introductionmentioning

confidence: 99%

Inductances Evaluation of a Squirrel-Cage Induction Motor with Curved Dynamic Eccentricity

Lv¹,

Bao²,

He³

et al. 2014

Journal of Electrical Engineering and Technology

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-Eccentricity faults more or less exist in all rotating electrical machines. This paper establishes a more precise model of dynamic eccentricity (DE) in electrical machines named as curved dynamic eccentricity. It is a kind of axial unequal eccentricity which has not been investigated in detail so far but occurs in large electrical machines. The inductances of a large three-phase squirrel-cage induction machine (SCIM) under different levels of curved DE conditions are evaluated using winding function approach (WFA). These inductances include the stator self and mutual inductances, rotor self and mutual inductances, and mutual inductances between stator phases and rotor loops. A comparison is made between the calculation results under curved DE and the corresponding pure DE conditions. It indicates that the eccentricity condition will be more terrible than the monitored eccentricity based on the conventional pure DE model.

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Performance Analysis of a Three-Phase Induction Machine With Inclined Static Eccentricity

Cited by 100 publications

References 22 publications

Three-phase induction motor with spiral sheet rotor

Three-phase induction motor with spiral sheet rotor

A Modified Model of Squirrel Cage Induction Machine Under General Rotor Misalignment Fault

Inductances Evaluation of a Squirrel-Cage Induction Motor with Curved Dynamic Eccentricity

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