大中型笼型异步电动机电容起动的研究

A Study of the Capacitor Starting Method of Large and Medium Squirrel-cage Asynchronous Motors

详细描述了大中型笼型异步电动机电容起动的特点，给出电容初步设计的原则与步骤，建立三相笼型异步电动机电容起动系统的数学模型，并进行仿真计算．理论分析和仿真实例表明，异步电动机采用电容起动，可以明显降低起动电流，保持较高的起动转矩，减少起动时间，是一种可供选择的新型起动力法，值得研究与开发．

This paper elaborated the characteristics of the capacitor starting of large and medium squirrel - cage asynchronous motors, and given the design method of the starting capacitor. A mathematical model for simulating the starting performances of capacitor system is established. The simulation results explain that the capacitor starting of large and medium squirrel-cage asynchronous motors can reduce the voltage dip, cut down starting current, and maintain high starting torque.The mathematical model and the simulation method proposed in this paper can be used to aifalyse and calculate the capacitor starting system.