铁磁元件励磁特性低频测量方法

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Abstract The current low-frequency measurement methods of ferromagnetic component excitation characteristics fail to consider the core loss. This paper analyzes the core loss principle under low frequency test, and concludes that the change of power frequency only affects the equivalent eddy current. Thus, the low-frequency test and conversion methods are proposed, which are suitable for measuring the excitation characteristics of ferromagnetic element in field test. The influence of core loss and leakage reactance is considered respectively. The low frequency voltage and current test data are both compensated. The test shows that the compensated data and the power frequency test results are basically the same. Compared with the frequency conversion method recommended by the regulation, the proposed method can reduce calculation error rate, where it reaches 5% during knee and saturated section.

Key words： Excitation characteristic core loss frequency conversion test loss compensation

Received: 08 May 2015 Published: 26 May 2017

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TM452

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	Articles by authors
	Wang Junkai
	Liang Shibin
	Liu Tao
	Yao Chenguo
	Liu Xin

Cite this article:

Wang Junkai,Liang Shibin,Liu Tao等. Low-Frequency Measuring Method for Ferromagnetic Elements Excitation Characteristics[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 168-173.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I10/168

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