Title :
Analysis of Two Novel Five-Phase Hybrid-Excitation Flux-Switching Machines for Electric Vehicles
Author :
Wei Hua ; Xiaomei Yin ; Gan Zhang ; Ming Cheng
Author_Institution :
Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
In this paper, two five-phase hybrid-excitation flux-switching (HEFS) machines with different stator topologies are designed and analyzed with the identical stator outer diameters and stack lengths. The electromagnetic performances, including the conventional static characteristics, such as phase flux, back-EMF, inductance, cogging torque and electromagnetic torque, and so on, are presented first. Then, both the flux-strengthening and flux-weakening capabilities are evaluated in detail according to the electromagnetic torque characteristics under different field currents with the help of 2-D finite element analysis. The corresponding predictions and conclusions indicate that the U-core topology is preferred for the five-phase HEFS machines.
Keywords :
electric potential; electric vehicles; finite element analysis; stators; 2-D finite element analysis; U-core topology; back-EMF inductance; electric vehicles; electromagnetic performances; electromagnetic torque; field currents; five-phase HEFS machines; five-phase hybrid-excitation flux-switching machines; flux-strengthening capabilities; flux-weakening capabilities; phase flux; static characteristics; stator outer diameters; stator topologies; Electromagnetics; Forging; Rotors; Stator windings; Topology; Torque; Finite element analysis (FEA); flux-regulation; flux-switching; hybrid-excited; stator-permanent magnet (PM);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2323089
