Study of Transformer Core Vibration and Noise Generation Mechanism Induced by Magnetostriction of Grain-Oriented Silicon Steel Sheet

Table 1

Vibration results of different measurement points under the magnetic density of 1.3 T.

Measurement point	Main vibration peak frequency (Hz)	The effective value of vibration acceleration (m/s^2)
1	100 and 200	0.072
2	100, 200, 400, and 700	0.042
3	100	0.166
4	100 and 200	0.041
5	100	0.038