Multiphysics model for predicting the sound radiation of a single-layer air-core coil

Gning, Paul; Lanfranchi, Vincent; Dauchez, Nicolas; Bouayed, Kaiss

doi:10.1016/j.apacoust.2018.11.021

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…The multi-physic computational method presented in our previous work [1] is based on a numerical process considering a single harmonic component. The process consists in coupling electromagnetic, mechanical and vibroacoustic numerical models within four steps as shown in Figure 3:…”

Section: Numerical Computation Process For Multicomponents Force Specmentioning

confidence: 99%

“…Dry-type air-core reactors used in electric grids can be source of noise pollution for neighborhood. The noise originates from the interaction of the electric current and the induced electromagnetic field, that produces periodic Lorentz forces exciting the structure [1]. These industrial reactors serve at limiting the fault currents, compensating the loads between two spectral components in parallel or filtering harmonics.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, analytical methods are not well suited for a complex geometry such as an open finite size cylindrical shell [20,21]. Recently, Gning [1] proposes a multi-physic model, coupling several numerical codes, to compute the sound radiation of a single-layer air-core coil fed by a purely sinusoidal current. Results agree well with measurements performed on a prototype coil intended for the manufacture of loudspeakers.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the multi-component electrical feed of air-core industrial reactors on their sound radiation

2020

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High voltage devices such as dry-type air-core reactors are subjected to environmental noise standards. Their excitation is due to Lorentz forces originated from the magnetic field, created by the coil itself, combined with the feed current. The objective of this paper is to show how spectral components present in the supply current of industrial dry-type air-core reactors is likely to produce a significant acoustic radiation. First, the multi-component distribution of the Lorentz forces is established. Then, the multi-physics computation process allowing to determine the acoustic pressure induced by each force component is presented. Finally, two industrial reactors are studied: a single and a multi-layer coil. It is pointed out that significant acoustic emergence can be induced by the interaction between small current spectral components with the fundamental or with each other.

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Section: Numerical Computation Process For Multicomponents Force Specmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%