非正弦激励下磁心损耗的计算方法及实验验证

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Abstract

In power electronics devices,the input voltage of magnetic components is often non-sinusoidal wave.So it is significant to study the calculation method of core losses under non-sinusoidal excitation.Firstly,the calculation method of core losses under sinusoidal excitation is introduced.Then the calculation methods of core losses under non-sinusoidal excitation are researched.The calculation formula of the modified iron losses separation method and the modified Steinmetz empirical formula method are acquired accordingly.Secondly,by considering the skin effect of the core,further modification for the modified iron loss separation method is made.Thus,based on numerical curve fitting the measurement results of the core losses of the annular amorphous alloy and nanocrystal line cores under sinusoidal waves,the analytical formulas of the above two methods are acquired.The analytical calculation results of the core losses of these two methods are compared.Finally,the measuring experiment of the core losses under non-sinusoidal excitation for the annular amorphous alloy and nanocrystalline cores are carried out.The experimental results of the core losses are compared with the calculation results of the above two methods,which verifies the accuracy of the above two methods under non-sinusoidal excitation.

Key words： Non-sinusoidal excitation core loss modified iron loss separation method modified Steinmetz empirical formula method

Received: 15 June 2015 Published: 18 September 2016

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TM277

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	Zhang Ning
	Li Lin
	Wei Xiaoguang

Cite this article:

Zhang Ning,Li Lin,Wei Xiaoguang. Calculation Method and Experimental Verification of Core Losses Under Non-Sinusoidal Excitation[J]. Transactions of China Electrotechnical Society, 2016, 31(17): 224-232.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I17/224

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