In order to research the influence of rotor slot type on electromagnetic excitation and vibration characteristics of induction motor, a 22kW asynchronous motor of Y2-200L2-6 is taken as an example. We established an experimental platform for physical separation of stator and rotor, the rotor of straight slot, skewed slot and dual skewed slot are combined with the same stator. The influence of different slot type on the vibration characteristics is analyzed through the analysis and test. It shows that the rotor slot type does not change frequency of electromagnetic excitation, but has a great influence on the frequency amplitude. The study can provide some reference for low vibration motor design.
