一种新颖的永磁同步电动机直接转矩控制策略  

Direct Torque Control Strategy in a Novel Permanent Magnet Synchronous Motor

作　　者：李丙才[1] 吕晋军[1] 徐化文[1] 吴小伟[2] 魏泰[1] 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050 [2]中国航空动力机械研究所,湖南株洲412002

出　　处：《新技术新工艺》2010年第2期33-35,共3页New Technology & New Process

摘　　要：结合空间矢量PWM与DTC,提出一种空间矢量转矩控制方法。利用DTC中检测与估算的信号,根据定子电压计算模型进行推导,得出定子电压的两相运动坐标系分量并合成定子电压,以此为基础重新搭建系统控制结构。该方法充分借助SVPWM连续调节的特点,避免了传统DTC通过6个离散的基本空间矢量对电磁转矩及定子磁链实行控制而造成的脉动,保留DTC响应迅速、控制简单的特点,兼顾了系统快速性与高精度要求,仿真与试验结果都证明了该方法的可靠性和有效性。A space vector torque control method was presented in this paper,which combines the space vector PWM and characteristics of DTC.The components of stator voltage in to phase rotating coordinate was deduced from the stator voltage calculate model with the detected signals by DTC,which were used to compose the stator voltage.Based on it,the control structure was redesigned.By the continuous modulation characteristics of space vector PWM,the discrete modulation method of DTC was avoided and the pulsation of current and torque was remedied.The quick response of DTC,the rapidity and high precision of control system were kept.The results of simulation and experiment have been proved the validity of this method.

关 键 词：永磁同步电动机 空间矢量转矩控制 直接转矩控制 

分 类 号：TM34[电气工程—电机] TM351