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基于阶跃级数逼近法的城市轨道交通钢轨短路电流趋肤效应研究

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Keywords: 城市轨道交通,钢轨,趋肤效应,Bessel方程,阶跃级数

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Abstract:

通过对钢轨等效圆柱形导体的Bessel方程求解,分析了单位阶跃电压信号作用于钢轨时电流响应。以此为基础,提出了基于阶跃电压级数逼近的趋肤效应时域计算方法,并采用Matlab/Simulink中S-Function函数建立钢轨短路模型。此外,分别采用频域计算方法及短路电流实测数据对该计算方法进行了验证,证明了该方法的有效性。

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