趋肤效应英文论文.docVIP

趋Effects of the skin 一.定义(skin effect) One. Definition (skin effect) 在计算导线的电阻和电感时，假设电流是均匀分布于他的截面上。 In calculating the wire resistance and inductance, assuming his current is evenly distributed in the cross section. 严格说来，这一假设仅在导体内的电流变化率（di/dt）为零时才成立。 Strictly speaking, this assumption only in the conductors current rate of change (di / dt) is zero when established. 另一种说法是，导线通过直流（dc）时，能保证电流密度是均匀的。 Another argument is that cable through a direct current (dc), can ensure that the current density is uniform. 但只要电流变化率很小，电流分布仍可认为是均匀的。 But as long as the current rate of change is very small, current distribution is still considered to be uniform. 对于工作于低频的细导线，这一论述仍然是可确信的。 For work in low-frequency thin wire, the paper still be confident. 但在高频电路中，电流变化率非常大，不均匀分布的状态甚为严重。 However, in high-frequency circuits, the current rate of change is very large, very serious state of uneven distribution. 高频电流在导线中产生的磁场在导线的中心区域感应最大的电动势。 High-frequency current in the wire in the magnetic field produced by the center area of the wire induced the greatest force. 由于感应的电动势在闭合电路中产生感应电流，在导线中心的感应电流最大。 Electromotive force induced in the closed circuit induced current, induced current in the wire center of the maximum. 因为感应电流总是在减小原来电流的方向，它迫使电流只限于靠近导线外表面处。 Because the induced current is always reduced the original direction of the current, forcing the current is limited to the external surface near the conductor. 这样，趋肤效应应使导线型 传输线 在高频（微波）时效率很低，因为信号沿它传送时，衰减很大。 This should enable the conductor skin effect type transmission line at high frequency (microwave), the efficiency is very low, because the signal along its transmission, the attenuation large. 对金属零件进行高频表面淬火，是趋肤效应在工业中应用的实例。 The surface of metal parts for high-frequency hardening, the skin effect is applied in industry examples. 二.简介 Introduction 趋肤效应 亦称为“ 集肤效应 ”。 Skin effect is also known as the skin effect . 交变电流(alternating electric current, AC)通过导体时，由于感应作用引起导体截面上电流分布不均匀，愈近导体表面电流密度越大。 Alternating current (alternating electric current, AC) th