Carbon-Fiber-Wrapped Rotor Strength Analysis for High-speed Permanent Magnet Synchronous Machine

In this paper, the carbon-fiber-wrapped rotor strength for High-speed permanent magnet synchronous machine (HSPMSM) was studied. Firstly, considering the carbon fiber wrapping process, the carbon fiber sleeve was divided into multiple carbon fiber rings. Using the carbon fiber wrapping stress as the boundary condition, the analytical model for rotor strength was proposed. Then, based on the model, the carbon fiber sleeve was rapidly designed and analyzed, and the finite element verification was carried out under the conditions of room temperature, room temperature, high temperature and high speed. The results of the two are basically consistent. It is proved that the proposed method is an effective method for rotor strength analysis. The analytical method can easily and quickly solve the stress distribution on rotor parts under arbitrary conditions. It can provide theoretical support for the rotor design of HSPMSM with carbon fiber sleeve. Finally, according to the analytical model, the rotor test sample was designed and manufactured, and the high-speed rotation test was carried out. The influence of different factors on rotor stress was analyzed and summarized.