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Basic Characterization of Magnetocoated Wire Fabricated Using Spray Method

机译：喷涂法制备的磁涂线的基本表征

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摘要

Recently, there has been an increase in the demand for high-efficiency miniature electronic equipment such as personal computers. Therefore, using high drive frequencies and reducing copper loss have become important in meeting the demand. In this paper, we propose the use of magnetocoated wires (MCWs) for coil windings fabricated using the spray method. MCW coils reduce the resistance due to the proximity effect because a magnetic layer leads a magnetic field. As a result, the resistances of the copper wire (COW) and MCW coils at the frequency f = 2.5 MHz are 668 and 447 mQ, respectively, which show a reduction of 33% from resistance of COW to MCW. The resistances of the MCW coils at the frequency f = 20 kHz and the current I = 8 A decreased by 10% compared with the resistances of the COW. The temperature increment of the MCW coils decreased by 5 °C compared with that of COW. This was because MCWs decrease the ac resistance of coils. The magnetic saturation was examined in detail using the finite-element method from the measured value of complex permeability. From the calculated magnetic field and measured magnetization curve, we show the absence of magnetic saturation in coils of nine turns.
机译：近来，对诸如个人计算机之类的高效微型电子设备的需求增加了。因此，使用高驱动频率和减少铜损对于满足需求已变得很重要。在本文中，我们建议将磁漆线（MCW）用于使用喷涂法制造的线圈绕组。由于磁性层引导磁场，MCW线圈由于邻近效应而降低了电阻。结果，在频率f = 2.5 MHz时，铜线（COW）和MCW线圈的电阻分别为668和447 mQ，这表明从COW到MCW的电阻降低了33％。与COW的电阻相比，MCW线圈在频率f = 20 kHz和电流I = 8 A时的电阻降低了10％。与COW相比，MCW线圈的温度升高降低了5°C。这是因为MCW会降低线圈的交流电阻。根据复磁导率的测量值，使用有限元方法详细检查了磁饱和。从计算出的磁场和测得的磁化曲线可以看出，九匝线圈中没有磁饱和。

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