This paper aims to address the motor axial shifting problem.By taking a 2 800 kW totally enclosed high-voltage convex pole synchronous motor as an example,the study is performed by adopting the finite volume method to numerically simulate the flow field in the motor;comparing the experimental results to confirm the correctness of the simulation results.The results show that the too large D-value of air pressure at the two ends of the rotor is the cause of the motor rotor axial shifting.The decrease of the axial height of the arc fan easily decreases the axial shifting volume of the rotor shaft,and relative to the original arc fan,D-value of air pressure at the two ends of the rotor after axial optimization is reduced by 72.98%and 96.49%,respectively;in the end,D-value of air pressure at the two ends of the rotor after arc fan optimization is 77.9 N,the rotor axial shifting amount is 0,as which meet the requirements of the motor design.This study results can provide the theoretical basis for the optimization of the motor rotor axial shifting.
关键词
全封闭高压凸极同步电机/弧形风扇/轴向风压
Key words
fully enclosed high-voltage salient pole synchronous motor/arc fan/axial wind pressure
维普
万方数据