Localized Surface Vibration and Acoustic Noise Emitted From Laboratory-Scale Transformer Cores Assembled From Grain-Oriented Electrical Steel

Localised surface vibration and acoustic noise emitted from laboratory scale transformer cores assembled from grain-oriented electrical steel

Secondary recrystallization characteristics of 3%Si grain-oriented electrical steel

A secondary recrystallization Lab study focusing on the secondary recrystallization temperature and magnetic properties was carried out on cold rolling industrial samples of 3%Si grain-oriented electrical steel produced by low slab reheating temperature technology. The results showed a secondary recrystallization temperature, determined by the observed grain size change, of 1080 C with annealin...

noise emitted from motorcycle exhaust and its control

introduction: during the thirty years ago noise pollution increased quickly in the urbane communities that motorcycles are chief sources of noise. the objective of this study is reduction of noise emitted from motorcycle exhaust, applying engineering design. materials and methods: in this pre-experimental study, current condition of noise emitted from motorcycle exhaust and physical parameters ...

Analysis of Microstructure and Microtexture in Grain-oriented Electrical Steel (goes) during Manufacturing Process

A. Volodarskaja, V. Vodárek, J. Holešinský, VŠB Technical University of Ostrava, FMME, Ostrava, Czech Republic. Š. Miklušová, O. Žáček. ArcelorMittal Frýdek-Místek, Frýdek-Místek, Czech Republic The final Goss texture in grain-oriented electrical steels (GOES) is affected by microstructure evolution and inheritance during the whole production process. This paper presents the results of detailed...

Design and Analyze the Optimum Operating Point between Magnetic Flux Density and Vibration Noise of Transformer Cores

Base on the magnetization and magnetostriction measurement, this paper proposed a generalized 3D finite element numerical model, which can be used to analyze electromagnetic vibration of laminated cores including electromagnetism and magnetostriction effects. And then the acoustic field around the transformer was analyzed and tested, the results showed the model and analysis method were feasibl...