降压起动下异步电机起动参数的研究与分析

Research and Analysis of Starting Parameters of Induction Motor When Reduced-voltage Starting

在生产生活中,异步电机的使用占用很大一个部分,而异步电机在起动瞬间会产生较大的电流,所以,经常采用降压起动的方法。本文在电机理论分析的基础上,深入分析机械特性曲线,针对异步电机起动瞬间的时间、功率、损耗等参数进行研究,得出异步电机在起动时的一系列特性关系,对工程实践起到了一定的指导作用。

In the production life, induction motor occupies a large part, and it will produce great current in the startup momentary moment, so the reduced-voltage starting method is often used. Based on the theoretical analysis of the motor, in-depth analysis of thetorque-speed characteristic curve is made, the startup time, startup power, startup consumption and other parameters in the startup momentary moment are studied, and a series of characteristic relationship when induction motor starting are obtained, which plays a guiding role in project practice.