摘要
[目的]为了研究变频器供电下的异步电机振动噪声,提出基于多回路模型的异步电机径向电磁力计算方法。[方法]在由定转子基波电流计算气隙磁动势的传统计算方法的基础上,推导由任意定子绕组及转子导条电流计算气隙磁动势及其产生的径向电磁力的解析计算公式。介绍多回路理论及电机各电磁参量的计算方法,建立异步电机多回路动态仿真模型,获得异步电机定子绕组及转子导条电流,推导其产生的径向电磁力的解析公式,并由此计算异步电机径向电磁力,估算其产生的振动。[结果]通过实验验证,发现计算得到的电机振动加速度频率及幅值与实验结果吻合。[结论]所得结论和计算方法可为变频器供电异步电机的低噪声设计提供支持。
[Objectives] In order to study the vibration and noise of induction motors, a method of radial electromagnetic force calculation is established on the basis of the multi-loop model. [Methods] Based on the method of calculating air-gap magneto motive force according to stator and rotor fundamental wave current, the analytic formulas are deduced for calculating the air-gap magneto motive force and radial electromagnetic force generated in accordance with any stator winding and rotor conducting bar current. The multi-loop theory and calculation method for the electromagnetic parameters of a motor are introduced, and a dynamic simulation model of an induction motor built to achieve the current of the stator winding and rotor conducting bars, and obtain the calculation formula of radial electromagnetic force. The radial electromagnetic force and vibration are then estimated. [Results] The experimental results indicatethat the vibration acceleration frequency and amplitude of the motor are consistent with the experimental results. [Conclusions] The results and calculation method can support the low noise design of converters.
出处
《中国舰船研究》
CSCD
北大核心
2017年第6期127-133,共7页
Chinese Journal of Ship Research
关键词
异步电机
多回路
磁动势
径向电磁力
induction motor
multi-loop
magneto motive force
radial electromagnetic force
