Title :
FSPM machines with twisted-rotor structure
Author :
De´e Xie ; Yu Wang ; Zhiquan Deng
Author_Institution :
Sch. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
High torque density, wide speed range are required in electric motors used in electric vehicles. Based on the comparison of flux-weakening capability of alternate and all poles wound machines, this paper employs twisted-rotor structure and chooses the optimal twist angle to improve the symmetry of flux-linkage of alternate poles wound FSPM machine without flux-linkage magnitude reduction and reduce the cogging torque effectively with negligible average torque reduction. This study brings the motor with the advantages of strong flux-weakening capability and good torque performance.
Keywords :
electric vehicles; permanent magnet motors; rotors; FSPM machines; all poles wound machines; electric motors; electric vehicles; flux-linkage symmetry; flux-switching permanent magnet machine; flux-weakening capability; high torque density; negligible average torque reduction; optimal twist angle; torque performance; twisted-rotor structure; wide speed range; Electric vehicles; Electromagnetics; Forging; Harmonic analysis; Rotors; Stators; Torque; Flux-weakening capability; Overload capability; Torque ripple; Twist;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-4316-6
DOI :
10.1109/ICIEA.2014.6931412
