Electrical Steel ›› 2019, Vol. 1 ›› Issue (2): 29-32.

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Effect of the coating on the noise characteristics of grainoriented silicon

CHENG Xiangwei1,XIE Wenliang2,YANG Chao2,ZhU Yechao1   

  1. 1.National Engineering Research Center for Silicon Steel, wuhan 430080,China;2.Silicon steel Department, Wuhan Iron and steel Co.,Ltd 430083,China
  • Online:2019-12-28 Published:2020-08-24

Abstract: The main source for the transformer noise is magnetostriction of grain-oriented silicon steel.In this paper, the effects of magnesium coating and phosphate coating on magnetostriction of grain-oriented silicon steel have been studied. The results showed that magnesium coating and phosphate coating could reduce the magnetostriction of grain-oriented silicon steel. Increasing the thickness of coating could decrease the hetero domain and 90 degree domain, and improve the noise characteristics of the oriented silicon steel.

Key words: grain oriented silicon, magnetostriction, coating, transformer noise