Descrease in noise and vibration of single-phase asynxronous motors in rolling stock

Abstract

Abstract The article describes the magnetic noise during the operation of a single-phase asynchronous motor due to the vibration of the stator package of the motor under the action of vibration-absorbing forces due to the interaction of harmonics of a magnetic field of various origins in the air gap of the machine. As a normalized parameter of vibration created by an electric machine, the effective value of the vibration velocity is adopted. Electric motors used in electric rolling stock operate in more difficult conditions in comparison with general industrial ones. In the electric rolling stock, various auxiliary electric machines are used. Despite the relatively low level of magnetic vibration of high frequency, due to its determining effect on the magnetic noise of single-phase motors, this component is of independent interest for research.