Analysis and compensation of beat phenomenon for railway traction drive system fed with fluctuating DC-link voltage

Proceedings of The 7th International Power Electronics and Motion Control Conference Pub Date : 2012-06-02 DOI:10.1109/IPEMC.2012.6258823

Bin Gou, Xiaoyun Feng, Wensheng Song, Kun-Young Han, X. Ge

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引用次数: 15

Abstract

The configuration of a single-phase AC-DC converter plus a three-phase DC-AC inverter traction system has been widely applied in high-speed railway electrical drive systems. The DC-link voltage contains a ripple component with a twice power line frequency because of the configuration of the single-phase converter. Fed by such a fluctuating DC-link voltage, a severe beat phenomenon of the motor current occurs, which causes torque ripple and a howling noise of the motor, especially when the electric frequency of the motor is in the neighborhood of the DC- link ripple frequency. The origin of DC-link voltage fluctuation and beat phenomena effect are analyzed in detail. For reducing the beat effect of DC-link voltage fluctuation without using an additional resonant filter at DC-link in the traction drive system, a beat-less control scheme based on the frequency modulation and vector control is discussed in detail. Simulation and hardware-in-the-loop (HIL) experimental results confirm the effectiveness and validity of the adopted scheme.

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直流电压波动下铁路牵引传动系统发热现象分析与补偿

单相交直流变换器加三相直流-交流逆变器牵引系统的配置在高速铁路电传动系统中得到了广泛应用。由于单相变换器的配置，直流链路电压包含两倍于电力线频率的纹波分量。在直流电压波动的作用下，电机电流会发生严重的跳动现象，引起转矩脉动和电机的啸叫噪声，特别是当电机的电频率在直流脉动频率附近时。详细分析了直流链路电压波动和热现象效应的产生原因。为了降低牵引传动系统直流电压波动的发热效应，而不需要在直流链路上增加谐振滤波器，本文详细讨论了一种基于调频和矢量控制的无发热控制方案。仿真和半实物(HIL)实验结果验证了该方案的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of The 7th International Power Electronics and Motion Control Conference

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