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基于三电平逆变器的异步电机矢量控制研究
引用本文:张伯泽,何礼高,陈鑫兵.基于三电平逆变器的异步电机矢量控制研究[J].电气传动自动化,2006,28(6):15-18.
作者姓名:张伯泽  何礼高  陈鑫兵
作者单位:南京航空航天大学,自动化学院,江苏,南京,210016
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。

关 键 词:矢量控制  三电平逆变器  中点电位  异步电机  仿真
文章编号:1005-7277(2006)06-0015-04
修稿时间:2005年10月26

Research on three-level inverter based on asynchronous motor vector control
ZHANG Bo-ze,HE Li-gao,CHEN Xin-bing.Research on three-level inverter based on asynchronous motor vector control[J].Electrical Drive Automation,2006,28(6):15-18.
Authors:ZHANG Bo-ze  HE Li-gao  CHEN Xin-bing
Abstract: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.
Keywords:vector control  three-level inverter  neutral-point potential  asynchronous motor  simulation
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