A 2D magnetic and 3D mechanical coupled finite element model for the study of the dynamic vibrations in the stator of induction motors

Martinez, Javier; Belahcen, Anouar; Detoni, Joaquim Girardello

doi:10.1016/j.ymssp.2015.06.014

Cited by 29 publications

(24 citation statements)

References 26 publications

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“…Le gave qualitative analysis of the cause of electromagnetic force waves in asynchronous machine [2]. Many researchers analyzed the electromagnetic vibration based on the 2D electromagnetic field and 3D structure finite element model [3,4]. However, some of the researchers had found that the origins of electromagnetic excitation which are the Maxwell forces, the Lorentz forces and the magnetostrictrive forces [5,6].…”

Section: Introductionmentioning

confidence: 99%

The study on magnetism and solid coupling vibration and its electromagnetic force characteristics in stator system of electrical machine

Li¹,

Jian-xin²,

Xiaohua³

et al. 2018

Vib. proced.

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The air-gap electromagnetic force is not the unique excitation which excites magnetism and solid coupling vibration on stator system of asynchronous machine. Besides, there should be a ponderomotive force as an internal electromagnetic excitation in stator core. Therefore, the magnetism and solid coupling vibration equation with both of the forces was obtained for the electromagnetically excited vibration on stator system of electrical machine. Based on Maxwell equations and the electromagnetic constitutive relation, the expressions of the electromagnetic field and force were derived by solving the eddy equation and the boundary conditions. With numerical calculation, the influences of geometric parameters on the electromagnetic field and forces were analyzed. The electromagnetic excitations of magnetism and solid coupling vibration on stator system were improved by the analysis of ponderomotive force in the stator core. Furthermore, the conclusions provide a theoretical basis for the electromagnetic design of asynchronous machine.

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Section: Introductionmentioning

confidence: 99%

The study on magnetism and solid coupling vibration and its electromagnetic force characteristics in stator system of electrical machine

Li¹,

Jian-xin²,

Xiaohua³

et al. 2018

Vib. proced.

View full text Add to dashboard Cite

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“…Many studies have been done to investigate the vibration of stator in the past decades, which can be classified into two categories: theoretical research and engineering application. Theoretical research mainly includes mathematical modeling, structure characteristic calculation, and dynamic response predicting using analytic or numerical method [1][2][3]. Engineering application mainly focuses on the vibration analysis technique, fault diagnosis technology and elimination solution [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…To cut down the unacceptable computational time brought by the huge number of DOFs, Xu et al [12] obtained the electromagnetic force by means of a simple analytical method that employed the no-load characteristic curve of an electrical machine, and then developed a FE rotor model of a large hydro-turbine generator unit to investigate the influence of UMP on radial vibrations. Matinez et al [1] presented a 2D-magnetic and 3D-mechanical coupled FE model which is the most suitable method for the vibration study in the stator of induction motors, but it only focused on steady-state and the eccentric situation was not considered. Inspired by the work of [1], a 2D-magnetic and 3D-mechanical coupled FE model was developed in this paper.…”

Section: Introductionmentioning

confidence: 99%

“…Matinez et al [1] presented a 2D-magnetic and 3D-mechanical coupled FE model which is the most suitable method for the vibration study in the stator of induction motors, but it only focused on steady-state and the eccentric situation was not considered. Inspired by the work of [1], a 2D-magnetic and 3D-mechanical coupled FE model was developed in this paper. With different mechanical models, eccentricity and radial-stud structure were considered.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Finite Element Analysis to Investigate the Vibration of Oblique-Stud Stator Frame in a Large Hydropower Generator Unit

Zhou

Peng

et al. 2017

Energies

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This paper presents an investigation on the undesirable vibration of an oblique-stud stator frame in a large hydropower generator by means of experimental and finite element (FE) analysis. First, field experimental tests were performed, and the results indicate that the main vibration component comes from electromagnetic factors. Then, a 2D-magnetic and 3D-mechanical FE model was developed to investigate the vibration of the stator frame under the action of electromagnetic forces. A set of contrast models was established to study the effects of different kinds of eccentricity and different structures. Based on the comparative analysis between the results of simulations and experimental tests, it can be inferred that the abnormal vibration is generated because of the lack of stiffness in the upper part of structure and the existence of dynamic eccentricity in the rotor-stator system. In addition, the structural simulation analysis shows that the flexible designed oblique-stud stator frame is relatively vulnerable against the electromagnetic forces.

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“…A full consideration of the stator structure, able to predict not only the frequencies of some harmonics but the complete response of the machine, was recently proposed. In [7] a weak coupling between the 2-D electromagnetic finite element computation and a detailed 3-D structural model of the stator and end shields, validated by modal analysis, was introduced. A projection algorithm linked both models.…”

Section: Introductionmentioning

confidence: 99%

2-D magnetomechanical transient simulation of a motor with a bar breakage

Climente-Alarcón

Arkkio

Antonino-Daviu

2017

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)

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The analysis of the vibration response of electrical machines has importance in noise prediction and more recently, fault diagnosis. This work presents a strongly coupled 2-D magnetomechanical simulation of an induction machine under heavy operational conditions: a direct-on-line startup. Both healthy and broken bar states are simulated in a time span long enough to allow the detailed study of the varying frequency components. The results yield, in addition to the usual electrical and magnetic quantities, electromagnetic induced vibration components in the stator. A comparison with current and vibration experimental data is also performed.

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A 2D magnetic and 3D mechanical coupled finite element model for the study of the dynamic vibrations in the stator of induction motors

Cited by 29 publications

References 26 publications

The study on magnetism and solid coupling vibration and its electromagnetic force characteristics in stator system of electrical machine

The study on magnetism and solid coupling vibration and its electromagnetic force characteristics in stator system of electrical machine

Experimental and Finite Element Analysis to Investigate the Vibration of Oblique-Stud Stator Frame in a Large Hydropower Generator Unit

2-D magnetomechanical transient simulation of a motor with a bar breakage

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