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首页> 外文期刊>Magnetics, IEEE Transactions on >Mn-Zn Ferrite Round Cable EMI Suppressor With Deep Grooves and a Secondary Short Circuit for Different Frequency Ranges
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Mn-Zn Ferrite Round Cable EMI Suppressor With Deep Grooves and a Secondary Short Circuit for Different Frequency Ranges

机译：Mn-Zn铁氧体圆电缆EMI抑制器，具有深沟槽和不同频率范围的二次短路

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摘要

A novel Mn-Zn ferrite round cable electromagnetic interference (EMI) suppressor with deep grooves and a secondary short circuit was constructed, realized and measured. Three steps were passed in novel suppressor development: from developing a suitable magnetic material, to constructing a suppressor device, to forming a new class of possible applications. Soft ferrite feedstock was formed from fine commercial Mn-Zn powder and a Solvent system binder based mainly on wax. Cylinder-shape cores with grooves were injected by powder injection molding (PIM) technology, chemically and thermally debinded and sintered at optimal conditions $(1280^{circ}{hbox{C}}/2 {hbox{h}})$. The samples were aimed to serve as cores for EMI suppressors on cables. Their impedance versus frequency was measured using the core length as a parameter. After that, copper wire was placed into the grooves on the outside surface of cores to form a secondary coil and different configurations were considered. The contribution of the short circuit coil inserted into the grooves to EMI suppression was measured and analyzed also. Maximal impedance values can be achieved with a secondary short circuited winding which passes through every groove. It was also shown that ferrite cores of the same length could be used for different frequency ranges by changing the configuration of secondary short circuited windings.
机译：构造，实现并测量了一种新型的深槽锰锌铁氧体圆电缆电磁干扰抑制器。新型抑制器的开发通过了三个步骤：从开发合适的磁性材料到构造抑制器装置，再到形成一类新的可能的应用。软铁氧体原料由精细的商用Mn-Zn粉和主要基于蜡的溶剂型粘合剂形成。通过粉末注射成型（PIM）技术注入具有凹槽的圆柱状型芯，在最佳条件下进行化学和热解胶和烧结。 $（1280 ^ {circ} { hbox {C}} / 2 {hbox {h}}）$ 。这些样品旨在用作电缆上EMI抑制器的芯。使用铁心长度作为参数测量了它们的阻抗与频率的关系。之后，将铜线放入芯的外表面上的凹槽中以形成次级线圈，并考虑不同的构造。还测量并分析了插入凹槽中的短路线圈对EMI抑制的影响。穿过每个凹槽的次级短路绕组可以实现最大阻抗值。还表明，通过改变次级短路绕组的配置，可以将相同长度的铁氧体磁芯用于不同的频率范围。

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