Shock-Resistance Rotor Design of A High-Speed PMSM for Integrated Pulsed Power System

This paper provides stress analytical models for a variable-speed simplified rotor of the surface-mounted permanent magnet synchronous motor (PMSM). The impact developed by alternator discharge on the prime motor rotor was analyzed. Parameters, such as interference fits between sleeve and magnets, rotor core and shaft, sleeve thickness, rotor heating have significant influences on the design of the shock-resistance rotor. Then the stress distribution of the actual rotor was verified by a 3-D finite element analysis model, and the critical speed of the integrated rotor was computed.