CAJ | 학술논문

动车组牵引传动系统由于单相脉冲整流器的引入，使直流环节存在2倍频脉动电压。该脉动电压会在电机侧产生拍频现象，引起电机转矩和电流脉动。本文分析产生拍频现象的原因，并通过对传动系统进行数学建模，得到电机转矩脉动和电机电流脉动与脉动电压的关系，采用一种基于频域分析的无拍频控制策略，通过加入一个补偿环节，根据脉动电压对电机转差频率进行修正，消除直流电压脉动引起的电机转矩和电流脉动，并通过仿真和实验对该方法进行了验证。
동차조견인전동계통유우단상맥충정류기적인입，사직류배절존재2배빈맥동전압。해맥동전압회재전궤측산생박빈현상，인기전궤전구화전류맥동。본문분석산생박빈현상적원인，병통과대전동계통진행수학건모，득도전궤전구맥동화전궤전류맥동여맥동전압적관계，채용일충기우빈역분석적무박빈공제책략，통과가입일개보상배절，근거맥동전압대전궤전차빈솔진행수정，소제직류전압맥동인기적전궤전구화전류맥동，병통과방진화실험대해방법진행료험증。
Because of the configuration of the single‐phase PWM converter in the traction drive system of EMU ,there exists a voltage ripple in the DC‐link ,which is twice the frequency of the grid .The DC ripple voltage will generate beat phenomenon at the motor ,and cause torque and current pulsation .In this paper ,the origin of the fluctuating DC volt‐age or beat phenomenon was analyzed ,and the relations among the motor torque ripple ,the motor current ripple and the DC voltage ripple were derived from the analytical model of the traction drive system .A beat‐less control scheme based on the frequency domain analysis was proposed .By adding a compensation link ,the slip frequency of the motor was modified in consistence with the ripple voltage ,to eliminate the torque and current ripple caused by DC voltage rip‐ple .The algorithm was verified by simulation and experiment .