一种简化三电平SVPWM的感应电动机矢量控制方法  

A Novel Method of Vector Control Based on Simplified Three-Level SVPWM for Induction Motor

作　　者：谢冬冬[1] 范波[1,2] 赵伟刚[1,2] 

机构地区：[1]河南科技大学,河南洛阳471003 [2]中信重工机械股份有限公司,河南洛阳471003

出　　处：《微特电机》2013年第6期45-49,共5页Small & Special Electrical Machines

基　　金：河南省教育厅自然科学研究项目(2011B470003)

摘　　要：针对二极管箝位型(NPC)三电平逆变器控制中传统调制算法复杂的缺点,提出一种简化三电平SV-PWM的矢量控制方法。通过将三电平空间电压矢量分解为二电平空间电压矢量,对参考电压矢量进行平移,得到各个基本矢量的作用时间和选择合适的开关状态,从而减小三电平逆变器的矢量控制的计算量。仿真和实验表明,基于该方法的三电平逆变器控制既简化了控制计算,又能保持整个电机控制系统良好的动、静态性能。Since the traditional modulation method is so complicated in the control of NPC three-level inverter, a meth- od of vector control based on a simplified three-level SVPWM algorithm was proposed. A three-level space voltage vector can be decomposed to two-level space voltage vectors, and the simplified algorithm was obtained with the translation of volt- age vector. The determination of the fundamental vector and the selection of appropriate switch states were obtained respec- tively to use the two-level space vector SVPWM algorithm. The calculation of vector control for three-level inverter was re- duced. The simulation analysis and the experiment results indicate that the control of NPC three-level inverter based on the method can reduce the calculation, and keep excellent dynamic and steady-state performances of the motor control system.

关 键 词：三电平逆变器 两电平空间矢量 参考电压 矢量控制 

分 类 号：TM346[电气工程—电机]