Sustained oscillation of an inverter-fed induction motor drive system and its stabilization

Sustained oscillation of an inverter-fed induction motor drive system and its stabilization
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逆变感应电机驱动系统的持续振荡及其稳定性

DOI:
10.1109/icems.2005.202902
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发表时间:
2005
期刊:
2005 International Conference on Electrical Machines and Systems
影响因子:
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--
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在PWM逆变器驱动的异步电动机调速系统中,经常会出现转速持续振荡现象。本文从Hopf分岔理论的角度研究了系统的持续振荡现象。给出了确定定子电压-频率平面内分岔集的极限环存在的充分必要条件。研究表明,在IM固有失稳条件下,存在分叉集。最后,通过设置V/f曲线来稳定转子转速的持续振荡,并对结果进行了数值验证
Sustained oscillation of rotor speed is often experienced in PWM inverter induction motor (IM) drive systems. In this paper the sustained oscillation phenomena is investigated from the point of view of Hopf bifurcation theory. The sufficient and necessary conditions for existence of limit cycle are presented to determine bifurcation set in plane of stator voltage versus stator frequency. This research indicates that bifurcation set exists in the condition of IM inherent instability. At last, it is shown that V/f curve can be set to stabilize the sustained oscillation of rotor speed and results are numerically verified
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