Title :
Comparison of Hybrid Excitation Topologies for Flux-Switching Machines
Author :
Wang, Yu ; Deng, Zhiquan
Author_Institution :
Dept. of Electr. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
The flux-switching permanent-magnet (FSPM) machine has robust rotor structure, high reliability, high efficiency, and high torque density. The hybrid excitation topology can realize flux adjustment and good constant power operating capability of the FSPM machines. According to different combination modes of PMs, excitation winding, and iron flux bridge, this paper compares and analyzes the electromagnetic performance of different hybrid excitation flux-switching machines with particular emphasis on coupling of PM flux and electrical excitation flux, utilization ratio of excitation current, flux adjustment capability, and torque capability. The analysis conclusions are verified by finite element method and experimental results based on an investigated parallel hybrid excitation flux-switching machine.
Keywords :
finite element analysis; machine windings; permanent magnet machines; reliability; rotors; FSPM machine; electromagnetic properties; excitation current utilization ratio; excitation winding; finite element method; flux adjustment capability; high-efficiency machine; high-reliability machine; high-torque density; hybrid excitation topology; iron flux bridge; parallel hybrid excitation flux-switching permanent-magnet machine; rotor structure; Bridge circuits; Iron; Magnetic flux; Stator windings; Topology; Windings; Brushless machines; flux-switching; hybrid excitation; permanent magnet;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2012.2196801
