电压不对称供电三相异步电动机的仿真研究

摘要

三相供电电压不对称对异步电动机的性能将产生较大的影响.本文根据三相异步电动机动态仿真模型,应用复数电压不平衡因数(CVUF)的概念,对三相供电电压不对称异步电动机起动过程进行了仿真研究,给出了不同CVUF时异步电动机的起动过程仿真波形,研究了起动时间和稳态时的转速、转矩、转速波动、转矩波动与CVUF的关系,得出了相应结论.%Three-phase unbalanced voltages have great effects on the performance of an induction motor. In this paper, based on the transient model for the induction motor and the conception of the complex voltage unbalanced factor, the simulation of the starting process for the induction motor fed by unbalanced voltages was studied, the curves of the starting process were given. The starting time, the steady-state torque variation, and speed variation for different CVUF were given out. Some conclusions related to the performances of the induction motor fed by unbalanced voltages were obtained.