Reduction of Vibration Noise for Amorphous Metal Alloy Core Distribution Transformer  

作　　者：刘道生 杜伯学 张建功 徐秋元 祁治海 郭英 

机构地区：[1]Key Laboratory of Smart Grid of Ministry of Education, School of Electrical Engineering and Automation,Tianjin University [2]Sanbian Sci-Tech Co.,Ltd.

出　　处：《Transactions of Tianjin University》2015年第4期289-298,共10页天津大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.51277131);the National Basic Research Program of China("973" Program,No.2014CB239501 and No.2014CB239506)

摘　　要：To understand the vibration noise behaviors of amorphous metal alloy core distribution transformer(AMACDT), a 10 k VA 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.To understand the vibration noise behaviors of amorphous metal alloy core distribution transformer(AMACDT), a 10 k VA 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.

关 键 词：distribution TRANSFORMER MAGNETOSTRICTION electrodynamic FORCE AMORPHOUS metal CORE VIBRATION noise transmission 

分 类 号：TM421[电气工程—电器]