摘要：本文建立了列车单轮传动模型，利用数学方法得到电机输出转矩和轮轨粘着在频域上的关系，以CRH5型动车组所采用电机为例，研究其在SVPWM调制策略下的转矩脉动，以及这些脉动对轮轨粘着的影响。

关键词：调制策略；转矩脉动；轮轨粘着

Abstract: This paper established the single wheel drive train model; Mathematical methods are used to get the motor output torque and the relationship between the wheel/rail adhesion in frequency domain; To type CRH5 emu adopted by motor as an example, studies the SVPWM modulation strategy under the torque ripple, and the influence of the pulse of