摘要
同步电动机失步后,特别是失磁失步后,常用重投励磁来实现再同步。而投励时刻不同,对再同步过程有非常大的影响。作者以数学计算机为手段,利用较完善的数学模型,求出不同投励时刻下同步电动机主要变量的暂态变化值,再根据适当的判据,找出最佳投励时刻。
When a synchronous motor pull out of step, particulary due to failure of excitation, usually we again swith the excitation in order to resynchronization. Instant of switching of the excitation has a great effect on process of resynchronization. Using a digit computer mathematical model, a method is provided to find the variety of main parameters during the resynchronization in different instant of switching of the excitation. Afterr that, on the basis of the proper criterion the best instant of the switching of the excitation is foundout.
关键词
同步电动机
再同步
最佳投励时刻
resynchronization synchronous moter
best instant of switching of the excitation
