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Determination of parameters significant for selection of an input filter for a DC catenary-supplied electric traction vehicle

机译：确定对于选择直流接触网的电力牵引车辆的输入滤波器而言重要的参数

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The paper presents the chosen aspects of parameters selection of input impedance of an electric traction vehicle with asynchronous motors supplied by voltage inverters. Efficiency of exemplary filters in attenuation of both current harmonics from a catenary side as well as harmonics generated by a drive system is presented on the basis of computer simulation results. Input impedance module was assumed as attenuation of harmonics from a supply side efficiency assessment parameter. Due to the fact that a minimum value of this parameter is defined by the standard for the frequency used in classical track circuits, attention was paid to impedance for frequency 50 Hz. Based on the analysis of the influence of a traction converter operation point on a drive system input impedance module, it was shown that even traction vehicles equipped with input filters, which meet the appropriate standards from the field of compatibility can be characterized by a changeable input impedance module depending on a strategy of a traction drive control system. This article presents the results concerning attenuation of selected filters, changeability of a drive system input impedance module in a frequency function of a basic component of inverter output voltage (f_(fal)) for various switching strategies and parameters of an input filter, impact of a traction substation output filter on the level of current harmonics transfer from a drive system to a catenary.
机译：本文介绍了由电压逆变器提供异步电动机的电力牵引车辆的输入阻抗参数选择的选定方面。根据计算机仿真结果，给出了示例性滤波器在降低悬链侧电流谐波以及驱动系统产生的谐波方面的效率。输入阻抗模块被假定为来自电源侧效率评估参数的谐波衰减。由于该参数的最小值由标准值定义为经典轨道电路中使用的频率，因此注意频率为50 Hz的阻抗。通过对牵引变流器工作点对驱动系统输入阻抗模块的影响进行分析，结果表明，即使配备了符合兼容性领域相应标准的输入滤波器的牵引车也可以通过可变输入来表征阻抗模块取决于牵引驱动控制系统的策略。本文介绍了有关所选滤波器的衰减，驱动系统输入阻抗模块在变频器输出电压（f_（fal））的基本函数的频率函数中对于各种开关策略和输入滤波器的参数，变频器的影响的可变性的结果。牵引变电站输出滤波器，用于将电流谐波从驱动系统传输到悬链线。

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