北京交通大学学报2011，Vol.35Issue(5)：89-93,105,6.
基于TMS320F28335的SHEPWM数字实现
Digital realization of SHEPWM based on TMS320F28335
摘要
Abstract
For the constraint of switching frequency, the traction drive system of high power AC locomotive mainly uses synchronous modulation PWM in high speed area. The fundamental problems of SHEPWM are analyzed and studied in this paper. The mathematical model of SHEPWM aimed at bipolar source inverter is built. And based on the model, the computational method and choice of initial value of selective harmonic eliminated nonlinear equations are developed, which simplified the calculation of switch angles and the digital realization. The generating methods of SHEPWM and the transition between different modulation modes using TMS320F28335 are studied in this paper. Finally the validity of the proposed methods is verified by simulation and experimental results.关键词
特定消谐PWM/机车牵引/曲线拟合/谐波分析/TMS320F28335Key words
selective harmonic elimination PWM/ locomotive traction/curve fitting/ harmonic analysis/TMS320F28335分类
交通工程引用本文复制引用
王琛琛,李瑞夫,周明磊..基于TMS320F28335的SHEPWM数字实现[J].北京交通大学学报,2011,35(5):89-93,105,6.基金项目
中央高校基本科研业务费专项资金资助(E11JB00220) （E11JB00220）
