SVPWM过调制法在永磁牵引逆变器中的应用  

Application of SVPWM Overpopulation Algorithm into Permanent Magnet Traction Inverters

作　　者：张育超[1] 徐鹏程 ZHANG Yuchao;XU Pengcheng(CSIC No.713 Institute CSIC Haiwei Zhengzhou High-Tech Co.,Ltd.)

机构地区：[1]中国船舶重工集团公司第七一三研究所,450000 [2]中船重工海为郑州高科技有限公司,450000

出　　处：《电机技术》2019年第5期34-37,51,共5页Electrical Machinery Technology

摘　　要：为了提高地铁牵引逆变器直流母线电压利用率,将基于叠加原理的过调制处理算法,应用在永磁同步电动机控制系统中,以减小电压谐波畸变率和转矩波动。文章先介绍过调制算法的原理,然后给出永磁同步电动机的运行方式及各个同步区的调制模式,最后在Matlab/Simulink环境下,建立永磁同步电动机控制系统的仿真模型.将基于叠加原理的过调制算法和传统单模式过调制算法进行对比仿真。结果表明,采用前者输出相电压谐波含量得到明显的抑制,转矩波动较小。In order to increase the utilization ratio of Dc bus voltage of subway traction inverter,the overpopulation algorithm based upon superposition principle is applied into the permanent magnet synchronous motor control system,to lower voltage harmonics distortion rate and increase torque ripple.First,principle of overpopulation algorithm is introduced in detail,and then,the operation mode of the permanent magnet synchronous motor and modulation mode of each synchronous zone are given,and finally,simulation mode of the synchronous motor control system is established under the Matlab/Simulink environment.Comparison and simulation are done between the overpopulation algorithm based upon superposition principle and traditional single-mode overpopulation algorithm.Come the results that the harmonic contents in the output phase voltage is obviously decreased as same as torque ripple,in case of applying former algorithm.

关 键 词：永磁同步电动机控制系统 过调制 牵引逆变器 叠加原理 

分 类 号：TM301.2[电气工程—电机]