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铁基纳米晶材料因其优异的软磁性能被广泛应用于脉冲磁元件中。为更好指导脉冲磁元件的设计与性能分析,需要根据应用环境测试铁基纳米晶磁芯的脉冲磁化特性。该文建立了基于LC铁磁谐振放电型测试平台,选择合适的测量电路,获得高、低剩磁铁基纳米晶材料在不同磁化速率、磁感应增量下的初始磁化曲线和磁滞回线,并获得脉冲磁导率、损耗等关键磁参数的变化趋势。通过曲线拟合的方法建立了脉冲磁导率、损耗与磁化速率、磁感应增量之间的数学关系,全面反映了铁基纳米晶磁芯的脉冲磁化特性。基于铁基纳米晶磁芯的脉冲磁化特性基础数据,能够有效、准确分析典型脉冲磁元件的工作特性并优化其设计。
Iron-based nanocrystalline materials because of its excellent soft magnetic properties are widely used in pulsed magnetic components. To better guide the design and performance analysis of pulsed magnetic elements, it is necessary to test the pulsed magnetization characteristics of iron-based nanocrystalline cores according to the application environment. In this paper, a test platform based on LC ferroresonance discharge was set up, and the appropriate measuring circuit was selected to obtain the initial magnetization curves and hysteresis loops of high and low remanent magnet based nanocrystalline materials under different magnetization rates and magnetic induction increments Get the pulse magnetic permeability, loss and other key magnetic parameters of the trend. The mathematical relationship between pulse permeability, loss and magnetization rate and magnetic induction increment was established by curve fitting method, which fully reflected the pulsed magnetization of iron-based nanocrystalline core. Based on the basic data of pulsed magnetization characteristics of iron-based nanocrystalline cores, it is possible to effectively and accurately analyze the operating characteristics of typical pulsed magnetic elements and optimize their design.