Abstract:

Through the experimentation of the noncrystalline alloy transformer , theoretical analysis and calculation of its finite element model ,and analyzing and exploring the vibration and noise source of the transformer, we choose the signal of the transformer vibration and noise to experiment in different frequency, receive datas ,analyze them and finally draw a conclusion that the experimental way and theoretical way have the same result that the transformer noise is not from current noise ,but from the up clamp structure which accepts prompting vibration radiating noise . That conclusion has a factual instructive suggestion for reducing transformer noise further.

Key words: vibration and wave, noncrystalline alloy transformer, vibration and noise, finite element analysis, accord response

摘要：

通过对非晶合金变压器的实验和对其有限元建模并进行理论分析和计算，对变压器的振动噪声源进行分析和探究；分别取变压器振动与噪声信号在不同频率下进行实验，并获得数据进行分析，最终实验和理论得到相同的结论，即确认变压器的噪声主要是上夹件结构受激励振动辐射噪声而非变压器的电流噪声，这对变压器进一步提出降噪措施具有实际的指导意义。

关键词: 振动与波, 非晶合金变压器, 振动与噪声, 有限元分析, 谐响应