Experimental and Comparative Study of Rotor Vibrations of Permanent Magnet Machines with Two Different Fractional Pole/Slot Combinations

This study deals with the noise, vibration, and harshness (NVH) characteristic analysis of permanent magnet synchronous motors (PMSMs) for electrical machines, such as electrically driven tools that are used in industries. An improved NVH design is needed for application to industrial tools. In gene...

Full description

Saved in:
Bibliographic Details
Published inApplied sciences Vol. 10; no. 24; p. 8792
Main Authors Bang, Tae-Kyoung, Shin, Kyung-Hun, Lee, Jeong-In, Lee, Hoon-Ki, Cho, Han-Wook, Choi, Jang-Young
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2020
Subjects
Asymmetry
Comparative studies
Electromagnetic fields
electromagnetic–mechanical analysis
Excitation
Finite element method
Flux density
Harmonic distortion
Influence
Magnetic fields
Magnetic flux
Magnetic pull
Mechanical properties
mechanical stress analysis
Noise
Permanent magnets
Permeability
PMSMs
Rotors
Symmetry
Synchronous motors
Vibration
Vibration analysis
Vibrations
Online AccessGet full text

Cover

More Information
Summary:This study deals with the noise, vibration, and harshness (NVH) characteristic analysis of permanent magnet synchronous motors (PMSMs) for electrical machines, such as electrically driven tools that are used in industries. An improved NVH design is needed for application to industrial tools. In general, the electromagnetic NVH characteristics of PMSMs are classified into electromagnetic excitation sources, such as total harmonic distortion of EMF, torque pulsation, magnetic pull force, and unbalanced magnetic force (UMF). This study compares the vibration and noise generated by fractional pole/slot combinations. In PMSMs with fractional pole/slot combinations, UMF is an important NVH source. PMSMs generate UMF because of armature reaction fields based on the pole/slot combinations and harmonics of magnetic flux density. UMF was derived using the finite element method, and the rotor vibration analysis was performed using electromagnetic mechanical coupling analysis. The analysis results and the effect of electromagnetic excitation characteristics on the rotor vibration of the PMSMs were compared and analyzed.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10248792