Abstract
To understand the vibration noise behaviors of amorphous metal alloy core distribution transformer (AMACDT), a 10 kVA prototype was tested under no-load and short-circuit conditions, respectively. The vibration characteristics were described when rated voltage was applied to the secondary side, and the primary side was connected with different load resistances. The largest amplitude positions on the upper bracket and tank surfaces were recorded by vibration sensors arranged on the surface. A data-acquisition platform was set up for signal measurement. The vibration amplitude related to frequency was discussed, and experimental results indicated that the position with the largest amplitude accrued in the middle of the upper bracket and tank surface, at phases a and c, respectively. The experimental results suggest that magnetostrictive and electrodynamic forces play a major role in exciting the vibration noise. At the same time, some rib-reinforcements were welded on the upper bracket and tank surfaces to lessen the vibration energy, which reduced the noise.
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Supported by the National Natural Science Foundation of China (No. 51277131) and the National Basic Research Program of China (“973” Program, No.2014CB239501 and No.2014CB239506).
Liu Daosheng, born in 1976, male, doctorate student.
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Liu, D., Du, B., Zhang, J. et al. Reduction of vibration noise for amorphous metal alloy core distribution transformer. Trans. Tianjin Univ. 21, 289–298 (2015). https://doi.org/10.1007/s12209-015-2551-4
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DOI: https://doi.org/10.1007/s12209-015-2551-4