三相感应电动机起动及三相短路故障的过程仿真  

Process Simulation of the Three-phase Induction Motor Starting and Three-phase Short Circuit Fault

作　　者：卜艳红 张艳明 董红玉 BU Yanhong;ZHANG Yanming;DONG Hongyu(Hebei Electric Motor Co.,Ltd.,051430)

机构地区：[1]河北电机股份有限公司,051430

出　　处：《电机技术》2023年第1期38-41,共4页Electrical Machinery Technology

摘　　要：文章首先列出了三相感应电动机的运动状态方程,包括各部分系数的值。然后分析起动时的初始状态以及空载稳定运行的状态,并分别作为起动和三相短路故障的初始值。利用四阶龙格-库塔方法求解不同时刻各状态量,并利用Excel自带的VBA编写了程序,实现了上述功能。最后通过实例计算了一台三相感应电动机在空载起动和三相短路故障两种工况下,定子电流和电磁转矩的冲击峰值。First,the equations of motion of a threephase induction motor are listed in the article including the values of the coefficients of each part.Then,the initial status at starting and the status under no-load stable operation are analyzed and these values are taken as the initial values into the starting and three-phase short-circuit fault status respectively,the fourth-order Longo-Kuta method is applied to calculate and achieve each status quantity at different moments while the above-mentioned functions are realized by means of the Excel’s own VBA writing program.Finally,the shock peaks of stator current and electromagnetic torque of a three-phase induction motor respectively under two operating conditions of no-load starting and threephase short-circuit fault are calculated,through a practical instance.

关 键 词：三相感应电动机 运动方程 起动过程 三相短路故障 

分 类 号：TM343[电气工程—电机]