高速磁悬浮列车系统的谐波分析

高速磁悬浮列车系统的谐波是一种典型的强非线性、冲击性电力负荷,是一重要的新类型谐波源,在没有补偿措施时,它会带来较严重的电网谐波问题。介绍国内外高速磁悬浮列车系统谐波问题的研究进展,通过建立谐波分析模型对上海高速磁悬浮列车牵引供电系统进行了深入的分析。通过对半控双三相12脉冲整流器的电流波形分析和傅立叶级数展开,得出系统的主要谐波成分。分析结果显示,在没有谐波补偿器的情况下,上海高速磁悬浮列车系统产生的谐波已超过我国有关的谐波国家标准。还介绍了上海高速磁悬浮列车系统的动态补偿器。

Harmonic analysis of high speed maglev system

As a typical strong nonlinear surge load,the harmonic produced by the high speed maglev system is an important new type of harmonic source.Without compensation measures it will bring severe harmonic problem to the network.The overseas study development of harmonic problem of high speed maglev system was introduced and an in-depth analysis was conducted of the power supply system for the driving system of the high speed maglev in Shanghai through establishing harmonic analysis model.Through analysis of the current waveform of the semi-control double three-phase 12-pulse rectifier and the expansion of Fourier series,the main harmonic components of the system were obtained.The analysis result showed that without harmonic compensator,the harmonic generated by the high speed maglev system in Shanghai exceeds the relevant Chinese national standards.The dynamic compensator for the high speed maglev system in Shanghai was also introduced.