Failure Modes Analysis of High-Speed Permanent Magnet Generator Rotor
This paper proposes a reliability analysis method and process for the rotor of a high-speed permanent magnet generator. Firstly, the typical structure of the magnetic bearing rotor of the high-speed permanent magnet generator is analyzed, and the rotor reliability block diagram is established. Based on the reliability block diagram, a rotor fault tree is constructed, and fault description, cause analysis, and qualitative analysis are carried out on the fault tree. On the basis of the fault tree, failure mode, effects, and criticality analysis (FMECA) is performed to obtain the rotor FMECA table. Through the FMECA table, risk analysis and criticality analysis are conducted to identify high-risk items, and suggestions for design and process improvements are proposed.