Journal
JOURNAL OF APPLIED PHYSICS
Volume 109, Issue 7, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3553939
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In this paper, the way to reduce the audible noise of a distribution transformer is presented by incorporating a newly developed transformer core and a rigid-structure tank. The vibrations related to the core structure and tank frame are considered, so that a distribution transformer with accelerometers mounted on the internal core and external tank, respectively, is addressed. In practice, the core with a new joint structure and the tank with a strong rigid-frame (H-type) are applied to a single-phase amorphous HB1-cored transformer with capacity 167 kVA for performance verification. Finally, a personal computer-based data acquisition platform is setup for signal measurement and processing. Experimental results demonstrate that the HB1 amorphous-cored transformer with the proposed core joint and rigid-structure tank can be performed well in the aspect of audible noise reduction. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3553939]
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