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The Effect of DC Bias Conditions on Ferrite Core Losses

机译：直流偏置条件对铁氧体磁芯损耗的影响

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摘要

In switched-mode power supplies - the predominant type of power converter in contemporary electronic equipment - ferrite magnetic components under dc bias conditions are typically large and have relatively high losses. The nature of these losses is not widely understood, and research in this area has been hampered by the difficulty of obtaining accurate core loss measurements. This paper reviews previous studies on the nature of core losses under dc bias, and presents new results, measured by a technique that has not previously been utilized for the measurement of core losses under dc bias conditions. The results show that ferrite core losses increase significantly with an increasing dc bias, and highlight the need for further research over a wider range of conditions to fully characterize the phenomenon.
机译：在开关模式电源（当代电子设备中主要的功率转换器类型）中，直流偏置条件下的铁氧体磁性元件通常很大，并且损耗相对较高。这些损耗的性质尚未得到广泛理解，并且由于难以获得准确的磁芯损耗测量值而阻碍了该领域的研究。本文回顾了有关直流偏置下铁损的性质的先前研究，并提出了新的结果，采用一种以前没有用于直流偏置条件下的铁损测量的技术进行了测量。结果表明，铁氧体磁芯损耗随直流偏置的增加而显着增加，并突出表明需要在更广泛的条件下进行进一步研究以充分表征该现象。

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