摘要
针对异步电动机变频调速系统运行时出现的转矩脉动现象,在对已有调制模式进行研究的基础上,建立了计及逆变器死区时间后异步电动机系统的整体数学模型,对系统运行于不同调制模式下的转矩脉动进行研究,得出了改进梯形脉宽调制(MTPWM)模式减少转矩脉动效果最佳的结论。
Appearance of torque pulsation phenomenon influences system' s running quality and reliability, when an induction motor (IM) operates in the manner of variable frequency and variable speed. Taking inverter' s dead time into consideration, the whole mathematical model of an IM system is set up, and then torque pulsation phenomenon is studied when the IM system operates in several different modulate strategies, the conclusion is derived that MTPWM modulate strategy has an optimal effect on reducing torque pulsation.
出处
《电机与控制学报》
EI
CSCD
北大核心
2005年第4期406-408,共3页
Electric Machines and Control
关键词
异步电动机
死区时间
调制模式
转矩脉动
induction motor
dead time
modulate strategy
torque pulsation
