基于空间矢量PWM的新型直接转矩控制系统  

A Novel Direct Torque Control System Based on Space Vectors PWM

作　　者：祝龙记[1] 

机构地区：[1]安徽理工大学

出　　处：《电气传动》2005年第4期11-13,共3页Electric Drive

摘　　要：传统的直接转矩控制存在着转矩脉动大,低速性能差、开关频率不固定等问题。提出了一种基于空间矢量PWM调制的新型直接转矩控制方法,将该控制方法应用到异步电动机调速系统,不仅易于用TMS3 2 0 F2 40 7型DSP的全数字化实现,而且输出的转矩脉动小、电流谐波低、开关频率固定。实验结果显示,该调速系统有着良好的动态性能和全范围的调速精度。The traditional direct torque control system has existed large torque fluctuation, poor performance of low speed region, inconstant switch frequency, etc. This paper presents a novel direct torque control method. The novel control method has been applied to the speed regulation system of asynchronous motor. It was easily realized based on digitization with DSP of TMS320F2407, and got low torque ripple, less current harmonic, constant switch frequency with this control method. The experiment results indicated that the speed regulation system got both good dynamic performance and high accuracy of the entire speed region.

关 键 词：直接转矩控制系统 空间矢量PWM TMS320F2407 转矩脉动 开关频率 调速系统 PWM调制 异步电动机 低速性能 控制方法 方法应用 全数字化 电流谐波 调速精度 动态性能 DSP 

分 类 号：TM343[电气工程—电机] TM464