Institute of Electrical and Electronics Engineers Inc.;New York: IEEE
摘要:
摘要： This paper presents the reduction of noise and vibration concerning the magnetostriction effects for a single-phase power transformer with a large capacity of 200 MVA. Two magnetic core shapes are investigated: 1) D-yoked core and 2) square-yoked core. The D-yoked core is used for the construction of the transformer prototype in this paper. The magnetostriction and the hysteresis loop of the core material are measured for the simulation and analysis of noise and vibration. The transformer prototype is assembled with an external clamping force applied on the core, and the core vibration and sound-level are observed. The transformer operates with a periodic excitation that may induce resonance in the core. To avoid this, a finite-element analysis is used for modal analysis to identify the natural frequencies of the core. A tank is also designed with a sufficiently rigid structure to avoid resonances. The sound-level of the fully assembled transformer prototype is measured, and it is found to have a low-noise level below 65 dB. 其他題名： TMAG 出版者： New York: IEEE 出版日期： 2015-11 出處： IEEE transactions on magnetics, 2015-11, Vol.51 (11), p.1-4 資源來源： IEEE Electronic Library (IEL) 版權： Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Nov 2015 識別號： ISSN: 0018-9464 識別號： EISSN: 1941-0069 識別號： DOI: 10.1109/TMAG.2015.2453635 識別號： CODEN: IEMGAQ
