环形磁粉心有效参数计算方法及其在IEC标准中的应用

Calculation method of the effective parameters of magnetic powder ring-cores and its application in IEC standard

在软磁材料的设计和应用中,常常需要以有效磁路参数来代替复杂的实际磁路结构和尺寸参数,用于计算元器件的各种电磁特性。规范各种软磁材料及元件的有效参数计算方法,是磁性材料标准化不可缺少的内容之一。在现行的IEC标准中,虽有磁性元件有效参数计算方法的相关标准,但并不能很好地适用于金属磁粉心类磁性材料及元件。首先介绍了有效磁路参数及相关标准概况,接着综合介绍了环形磁粉心有效参数的三种计算方法及对应的电感量和损耗计算结果对比,指出了行业现用有效参数计算存在的问题,最后重点阐述了由中国主导的有关环形磁粉心有效参数IEC标准的制定情况。

In the design and application of soft magnetic materials,it is often necessary to use the effective magnetic path parameters to replace the complex actual magnetic path structure and size parameters,which are used to calculate various electromagnetic characteristics of the components.It is one of the indispensable contents in the standardization of magnetic materials to standardize the effective parameter calculation methods of various soft magnetic materials and components.In the current IEC standards,although there are relevant standards for calculating effective parameters of magnetic components,they are not well applicable to metallic magnetic powder cores.Firstly the effective magnetic path parameters and related standards were introduced.Then,the three calculation methods of the effective parameters of magnetic powder ring-cores and the comparison of corresponding calculation results of inductances and losses were comprehensively introduced.The problems of calculation methods of the effective parameters used by the industry were pointed out.Finally,the development of IEC standard for effective parameters of powder ring-cores,which is led by China,was emphasized.