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环形磁芯脉冲磁化特性测量分析

DOI: 10.13334/j.0258-8013.pcsee.2015.16.028, PP. 4239-4246

Keywords: 脉冲磁化,磁芯,铁基纳米晶,初始磁化曲线,ψ,-i特性

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Abstract:

测量磁芯脉冲磁化特性是进行脉冲磁元件的设计和性能分析的必要环节。该文采用理论与实验相结合的方法分析了磁芯的脉冲磁化特性测量及不同测量方法的适用范围。由单绕组测量回路得到的B-H曲线包含磁芯磁化及空间磁化两部分,由双绕组测量回路得到的B-H曲线仅反映磁芯脉冲磁化特性。采用单绕组脉冲磁化特性测量获得的磁芯伏秒积、平均饱和电感偏大,获得非线性电感的ψ-i特性,适用于磁开关和带磁芯脉冲电感的设计和性能分析;而双绕组脉冲磁化特性测量电路更适用于测量磁芯本身的脉冲磁化特性,适用于脉冲变压器和磁芯式电流互感器的设计和磁芯材料脉冲磁化特性的研究。

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