Abstract
Transformers are important under-vehicle equipment for high-speed EMUs and play an important role in ensuring the power transmission of EMUs. This article first introduces the vibration reduction theory of the equipment under the EMU, and then briefly introduces the structure of the transformer and the arrangement of the measuring points. Afterwards, The vibration data of the transformer in the middle and late stages of wear are analyzed. It can be obtained that: some line sections of the vehicle have hunting movement, and the lateral acceleration of the frame has harmonics, the main frequency is 7Hz, and the amplitude is 0.6g (3-9Hz band-pass filter). The bogie vibration will be transmitted to the carbody and the equipment under the carbody, which has a greater impact on the vibration of the auxiliary converter body, that is, the lateral main frequency of the auxiliary converter is about 7Hz.
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