感应电机断条与静态偏心复合故障的机理分析及仿真研究

Rotor broken bars is one of the common faults of induction motor, but in practice, the broken bars is generally accompanied by static eccentricity. The main purpose of this paper is to analyze and simulate the influence of the composite fault (broken bars and static eccentricity exist simultaneously) of induction motor on the stator current. The multi loop theory model of induction motor is established, and the inductance parameter of induction motor is calculated by the modified winding function method. The results show that there is a series of harmonic components in the stator current of the composite fault except for a single fault section of the broken bars and static eccentricity. Based on Ansoft software, the finite element simulation model of induction motor is established. The theoretical analysis is verified by simulation results.