直流偏磁对变压器振动噪声的影响

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Abstract Magnetostriction in grain-oriented electrical silicon steel arises vibration and noise of the transformer core, especially when operating under direct current(DC) bias. In this paper, the anisotropy of magnetostriction of grain-oriented(GO) silicon steel sheets along the rolling direction (RD) and transversal direction(TD) deviating from RD 90° is measured based on a standard single sheet measurement system, and the single-valued curves of magnetostriction are obtained when incorporated with magnetic finite element(FE) analysis, then the vibrations are calculated through software. The vibration and noise are measured by experiments, the effect of DC bias on vibration and noise of transformer core is studied in detail.

Key words： Magnetostriction DC bias vibration noise

Received: 14 April 2013 Published: 25 May 2015

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TM412

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	Articles by authors
	Wang Jiayin
	Bai Baodong
	Liu Hongliang
	Ma Chuang

Cite this article:

Wang Jiayin,Bai Baodong,Liu Hongliang等. Research on Vibration and Noise of Transformers under DC Bias[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 56-61.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I8/56

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