Title :
Optimum design of ultra high speed hybrid rotor of PM machines
Author :
Wenjie Cheng ; Guohui Xu ; Yanhua Sun ; Haipeng Geng ; Lie Yu
Author_Institution :
State Key Lab. for Strength & Vibration of Mech. Struct., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
For the ultra high speed PM rotor, a metallic sleeve is usually interference fitted onto a cylinder or ring shaped PM to against the huge centrifugal force. The initial interference hinges not only on the loose of the rotor, but also strongly on the strength of the PM and the sleeve. In order to determinate the initial interference, this paper proposes an analytical model of stress/displacement field of the rotor which is verified by the Finite Element (FE) Method. Then, the initial interference which facilitates the optimal design of this type of rotor is deduced.
Keywords :
finite element analysis; permanent magnet machines; rotors; FE method; analytical model; displacement field; finite element method; metallic sleeve; permanent magnet machines; stress field; ultra high speed PM rotor; Copper alloys; Equations; Force; Interference; Materials; Rotors; Stress; PM rotor; interference fit; strength; ultra high speed;
Conference_Titel :
Mechatronics and Automation (ICMA), 2014 IEEE International Conference on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4799-3978-7
DOI :
10.1109/ICMA.2014.6885902
