Journal Article10.1109/TIE.2018.2883194
An Analytical Method for Calculating the Natural Frequencies of a Motor Considering Orthotropic Material Parameters
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TL;DR: A novel analytical method is proposed for calculating the natural frequencies of a motor to reduce the large natural frequency calculation errors produced by common isotropic analytical models and is found to be in good agreement with those of the experimental results, verifying the accuracy of the proposed model.
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Abstract: In this paper, a novel analytical method is proposed for calculating the natural frequencies of a motor to reduce the large natural frequency calculation errors produced by common isotropic analytical models. First, a theoretical model of the equivalent cylindrical shell is established with five orthotropic material parameters by considering the simple-support boundary condition, the effect of the axial length, and the orthotropic characteristics of the motor. Then, the density of the equivalent cylindrical shell is obtained, and the composite material theory is employed to estimate the equivalent orthotropic material parameters. Finally, we find that the natural frequencies and the modal shapes obtained by the proposed analytical model are in good agreement with those of the experimental results, verifying the accuracy of the proposed model.
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Citations
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Influence of the Stator Winding and Forming of the End Winding on the Vibration Behavior of Electric Machine’s Stator Core
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TL;DR: In this article, the impact of the winding copper on the acoustic behavior of an electric machine's stator has been investigated, and the modal damping of the stator cores has been evaluated.
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Analytical Calculation Method of Motor Natural Frequencies Based on Equivalent Model of Three-Layer Cylindrical Shell
TL;DR: In this article , a new analytical calculation method of the natural frequencies of the motor is proposed in order to reduce the errors caused by simplified structure in the analytical method, and the accuracy of the ACM is verified by finite element simulation and hammering method modal test.
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References
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TL;DR: For the coupled electromagnetic and structure-dynamic simulation of electrical machines, various 2D and 3D techniques are available as discussed by the authors, and the strength as well as the weaknesses of these methods are pointed out.
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The vibrational analysis and experimental verification of a plane electrical machine stator model
Huan Wang,K. Williams +1 more
TL;DR: In this paper, the effect of laminations on the transverse vibrational modes of a stator was investigated and it was shown that the effect is much greater than on the in-plane vibrational mode.
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Theoretical and experimental study of vibrational behaviour of laminated stators of electrical machines
TL;DR: In this article, the effect of windings, frame, and impregnation on the vibrational behavior of stators of electrical machines is investigated. But the analysis is based on the three-dimensional theory of elasticity and is limited to stators with encased construction.
16
Structure-Dynamic Analysis of an Induction Machine Depending on Stator–Housing Coupling
TL;DR: In this article, the authors presented an analytical model based on the electromagnetic field theory to derive the exciting forces stemming from various sources and effects of an induction machine's housing with six spiral-steel springs.
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•Proceedings Article
Effects of end-shields and rotor on natural frequencies and modes of stator of small electrical machines
TL;DR: In this article, the effects of allowing for the end-shields, the rotor and the running condition on the natural frequencies and modes of the stator of a small electrical machine have been investigated by the modern experimental modal analysis technique.
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