Effects of Stator Laminations on Acoustic Noise of Electrical Machines

Ibrahim, Issah; Lowther, D.A.

doi:10.1109/ecce47101.2021.9595073

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…Let us consider the laminated stator composed by many electrical steel sheets. An in-depth study referring to the influence of stator lamination on the noise emission of electric motors is presented by Ibrahim [103], who points out that FEM modelling of a solid isotropic stator leads to a noisier design with respect to a laminated one. The reason is related to the thin stacked silicon steel plates, which create barriers that inhibit the propagation of vibrations on the stator outer surface.…”

Section: ) Motor Componentsmentioning

confidence: 99%

“…where n is the maximum spatial order considered and Z is the number of stator teeth, the equivalent concentrated force method neglects high spatial harmonic distribution [3]. the uneven distribution of electromagnetic forces is considered, also other authors apply the distributed forces on the nodes [103], [116]. A greater number of nodal forces allows to take Fig.…”

Section: ) Modal Analysismentioning

confidence: 99%

See 1 more Smart Citation

Noise and vibration modelling of Permanent Magnet Synchronous Motors - a review

Soresini,

Barri,

Ballo

et al. 2024

IEEE Trans. Transp. Electrific.

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This paper provides an overview of current Noise Vibration and Harshness (NVH) challenges for the design of Permanent Magnet Synchronous Motors (PMSMs) for automotive applications. Particular attention is devoted to analytical and numerical methods utilized in NVH modelling. Electromagnetic force computation, motor structural modelling and acoustic emission calculation are reviewed focusing on NVH emissions. The literature reveals, as expected, that analytical methods are simpler than numerical ones, and are usually employed during the preliminary design stage. Numerical methods are adopted in the detailed design stage as the computational cost increases. PMSMs are selected for high performance and high efficiency motor drives, they are widely adopted in the actual transition to vehicle electrification. The paper provides guidelines for facing NVH design issues of PMSMs.

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Section: ) Motor Componentsmentioning

confidence: 99%

Section: ) Modal Analysismentioning

confidence: 99%

Noise and vibration modelling of Permanent Magnet Synchronous Motors - a review

Soresini,

Barri,

Ballo

et al. 2024

IEEE Trans. Transp. Electrific.

View full text Add to dashboard Cite

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Noise and vibration characteristics of sub-fractional horsepower single-phase BLDC drives

Saed

Leitner

Krall

et al. 2022

Elektrotech. Inftech.

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Single-phase brushless DC (BLDC) drives are a cost-effective alternative for three-phase sub-fractional horsepower drives in automotive auxiliary applications. Inherent features of single-phase permanent magnet machines, such as high cogging torque and torque ripple, can, however, make them more audible than their three-phase counterparts. As some of these auxiliary drives are close to the passengers, where even a small amount of noise can be disturbing, the investigation into noise sources is essential to further address this challenge. In this paper, the dominant noise and vibration characteristics of single-phase BLDC machines are investigated for two different stator structures, i.e., salient-pole and claw-pole, and compared. Magnetic force density waves and finite element (FE) analyses are performed to analyze the electromagnetic forces resulting from the open-circuit condition as well as different switching strategies in the load condition. Structural analyses show that due to the mechanical structure’s lower stiffness and natural frequencies in the audible range, the example case machine with the claw-pole stator develops higher structure- and air-borne noise than the machine with the salient-pole stator.

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Effects of Stator Laminations on Acoustic Noise of Electrical Machines

Cited by 2 publications

References 14 publications

Noise and vibration modelling of Permanent Magnet Synchronous Motors - a review

Noise and vibration modelling of Permanent Magnet Synchronous Motors - a review

Noise and vibration characteristics of sub-fractional horsepower single-phase BLDC drives

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