A Novel Technique for the Computation of Inductances of Salient Pole Machines under Different Eccentricity Conditions

Akbari, Hamidreza; Milimonfared, Jafar; Kelk, Homayoun Meshgin

doi:10.1080/15325008.2011.596752

Cited by 5 publications

(6 citation statements)

References 32 publications

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“…In [12], the values of inductances of an eccentric SPSM have been determined using Fourier series expansions of the inverse air gap function and numerical integration. In the recent studies [17,20], analytical expressions have been presented assuming Figure 2. Approximated air gap function for a four pole eccentric SPSM (SE = 30%).…”

Section: Analytical Equations Of Inductances For General Eccentricitymentioning

confidence: 99%

“…In the previous works, based on winding function theory, the calculation of SPSM inductances is carried out using numerical integration or inexact analytical equations based on approximated Fourier series expansions of the inverse air gap function [11][12][13][14][15][16], except [17], in which, the air gap function has been estimated by a step function.…”

Section: Introductionmentioning

confidence: 99%

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An Improved Analytical Model for Salient Pole Synchronous Machines Under General Eccentricity Fault

Akbari¹

2013

PIER B

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Abstract-This paper develops a more precise analytical model for calculating salient pole synchronous machine (SPSM) inductances in case of general eccentricity including static, dynamic and mixed eccentricities. The developed method is based on the modified winding function approach (MWFA) which accurately considers variable air gap function and leads to pure analytical expressions of inductances. Available analytical techniques, based on MWFA, approximate the air gap function and simplify the geometrical model of SPSM, whereas, in this study, the influence of the openings between the rotor salient poles has been taken into account by using an effective form of rotor pole shoes. Using this technique, flux fringing effect is considered. By taking into account machine geometry, type of windings connection and flux fringing effect, this method is able to model most of the important features of an eccentric SPSM. The developed analytical expressions can calculate time varying inductances of SPSMs with any eccentricity type and degree in the frame of a single program. Simulation results for static eccentricity are compared with experimental tests on a laboratory generator to verify accuracy of the proposed model.

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Section: Analytical Equations Of Inductances For General Eccentricitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Improved Analytical Model for Salient Pole Synchronous Machines Under General Eccentricity Fault

Akbari¹

2013

PIER B

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“…To compensate this radial force (RF) some remedial strategies 534 Electric Power Components and Systems, Vol. 43 (2015), No. 5 have been proposed mainly concerning some modifications in windings structure.…”

Section: Introductionmentioning

confidence: 97%

“…EFs can be detected by monitoring several parameters of the motor such as torque, stator current, temperature, and inductance [3][4][5]. Also, mutually induced voltages have introduced as a good criteria for detection of EFs in [6].…”

Section: Introductionmentioning

confidence: 99%

Unbalanced Magnetic Force Mitigation and Torque Ripple Reduction in Eccentric Switched Reluctance Motors Using Flux Leakages

Tavakoli

Torkaman

Faradjizadeh

et al. 2015

Electric Power Components and Systems

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“…This method has been applied to analyze static, dynamic and mixed eccentricity in induction and synchronous machines [7][8][9][10][11][12]. In [13], different geometrical models for the calculation of inductances of induction machines were evaluated, and the best approximation was recommended.…”

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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A Novel Technique for the Computation of Inductances of Salient Pole Machines under Different Eccentricity Conditions

Cited by 5 publications

References 32 publications

An Improved Analytical Model for Salient Pole Synchronous Machines Under General Eccentricity Fault

An Improved Analytical Model for Salient Pole Synchronous Machines Under General Eccentricity Fault

Unbalanced Magnetic Force Mitigation and Torque Ripple Reduction in Eccentric Switched Reluctance Motors Using Flux Leakages

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

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