Noise and Vibrations of Electrical Machines

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Machines Testing and Maintenance".

Deadline for manuscript submissions: closed (25 April 2024) | Viewed by 1204

Special Issue Editor


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Guest Editor
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, China
Interests: permanent magnet machines; finite element analysis; stators; permanent magnet motors; vibrations; electromagnetic forces; synchronous motors; machine windings; synchronous machines; PWM invertors; machine control; rotors; brushless machines; coils; electric current control; electric machines; feedforward; flywheels; homopolar machines; magnetic fields; magnetic flux; magnetization; mechanical contact; power inductors; power system harmonics

Special Issue Information

Dear Colleagues,

The vibration and noise issues in electrical machines have been concerns for a long time, and they are still arousing interests in many applications such as electrified transportation, industrial drives, household appliances, etc., whereas the generation mechanisms and suppression methods are still complicated for machine designers and manufacturers.

As is well-known, the noise and vibration in electrical machines is mainly induced by the electromagnetic (EM) force, and plenty of research papers have been focused on this aspect, especially on the radial EM force. However, recent publications show that the influences of structure geometry modulation, manufacturing errors, current harmonics from the inverter, etc., are considerable. This Special Issue is set for the exchange of new ideas in the area of vibration and noise problems in electrical machines, aiming to improve the understanding of its generation mechanism and inspiring new solutions for quiet machines.

Dr. Haiyang Fang
Guest Editor

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Keywords

  • noise
  • vibration
  • electrical machines
  • fault detection
  • vibration analysis
  • vibration mitigation

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Published Papers (1 paper)

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Research

15 pages, 6360 KiB  
Article
Experimental Determination of Influences of Static Eccentricities on the Structural Dynamic Behavior of a Permanent Magnet Synchronous Machine
by Julius Müller, Marius Franck, Kevin Jansen, Gregor Höpfner, Jörg Berroth, Georg Jacobs and Kay Hameyer
Machines 2024, 12(9), 649; https://doi.org/10.3390/machines12090649 - 16 Sep 2024
Viewed by 621
Abstract
In electrified vehicles, the masking noise behavior of internal combustion engines is absent, making the tonal excitation of the electric machine particularly noticeable in vehicle acoustics, which is perceived as disturbing by consumers. Due to manufacturing tolerances, the tonal NVH characteristics of the [...] Read more.
In electrified vehicles, the masking noise behavior of internal combustion engines is absent, making the tonal excitation of the electric machine particularly noticeable in vehicle acoustics, which is perceived as disturbing by consumers. Due to manufacturing tolerances, the tonal NVH characteristics of the electric machine are significantly influenced at wide frequency ranges. This paper presents a systematic exploration of the influence of static eccentricity as one manufacturing tolerance on the NVH behavior of Permanent Magnet Synchronous Machines (PMSMs). The study utilizes a novel test bench setup enabling isolated variations in static eccentricity of up to 0.2 mm in one PMSM. Comparative analysis of acceleration signals reveals significant variations in the dominance of excitation orders with different eccentricity states, impacting critical operating points and dominant frequency rages of the electric machine. Despite experimentation, no linear correlation is observed between increased eccentricity and changes in acceleration behavior. Manufacturing eccentricity and deviations in rotor magnetization are discussed as potential contributors to the observed effects. The findings emphasize static eccentricity as a critical parameter in NVH optimization, particularly in electrified powertrains. However, the results indicate that further investigations are needed to explore the influence of eccentricities and magnetization deviations on NVH behavior comprehensively. Full article
(This article belongs to the Special Issue Noise and Vibrations of Electrical Machines)
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