基于三电平逆变器的异步电机矢量控制研究  

Research on three-level inverter based on asynchronous motor vector control

作　　者：张伯泽[1] 何礼高[1] 陈鑫兵[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016

出　　处：《电气传动自动化》2006年第6期15-18,共4页Electric Drive Automation

摘　　要：矢量控制使异步电机转子磁链与转矩解耦,可实现对转速、转矩和位置的精确控制,使异步电机具有与直流电机一样的控制特性。三电平逆变器比传统的两电平逆变器有更多的开关状态,有利于输出电压正弦化和向高压大容量发展。研究了基于三电平逆变器的异步电机矢量控制,在参考电压矢量的合成时,选择只包含PO状态的矢量作为起始矢量,既保持了中点电位的平衡,又消除了扇区切换时矢量突变问题。仿真结果表明电机动态、稳态性能优越。The vector control provides decoupling control of asynchronous motor rotor flux and torque.This method can obtain high performance control of torque,speed and position from an asynchronous motor.An inverter-driven asynchronous motor has the same performance with DC motor.The three-level inverter has larger number of switching states than the traditional two-level inverter,and it is convenient to realize the high sinusoidal output voltage and large capacity.The asynchronous motor vector control based on three-level inverter is studied.When synthesizing the referrence voltage vector,select the vector which only includes P and O states as the starting vector,thus not only keep the neutral-point potential balance but also eliminate the vector shift problem when sector switches.The simulation results verify the asynchronous motor's dynamic and steady state performances are excellent.

关 键 词：矢量控制 三电平逆变器 中点电位 并步电机 仿真 

分 类 号：TM464[电气工程—电器] TM921