摘要
分析和研究了三相异步电动机断电和重合闸的瞬态过程及危害。运用直接相量法建立了三相异步电动机的数学模型,并利用Ansoft语言建立了仿真模型。以一台三相异步电动机为例,仿真了电源断电后不同时间段重合闸时的电机瞬态过程,并给出了定子电流、转矩的瞬态曲线。通过仿真与理论相结合进行分析,得出在断电重合闸过程中,电机定子电流和转矩波动趋势。
This paper analyzes and researches transient process and harm of three-phase induction motor when deenergizing and reclosing. The mathematical model of three-phase induction motor is established by direct phasor method,and the simulation model is built by Ansoft language. Taking a three-phase induction motor as an example,the transient process of deenergized motor is simulated when the power is reclosed at different times,and the transient curves of stator current and torque are given. By the combined analysis of simulation and theory,the fluctuation trends of stator current and torque of motor in deenergizing and reclosing are obtained.
出处
《防爆电机》
2015年第1期38-41,共4页
Explosion-proof Electric Machine
关键词
三相异步电动机
数学模型
重合闸
瞬态
Three-phase induction motor
mathematical model
reclosing
transient state
