A Novel Doubly-Fed Flux-Switching Permanent Magnet Machine With Armature Windings Wound on Both Stator Poles and Rotor Teeth

In this article, a novel doubly-fed flux-switching permanent magnet (DF-FSPM) machine is proposed, whose armature windings are wound on both stator poles and rotor teeth. Different from the conventional FSPM machine in which the armature windings are only located in the stator, the rotor slot area i...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2020-12, Vol.67 (12), p.10223-10232
Main Authors: Wu, Lijian, Zhu, Jiabei, Fang, Youtong
Format: Article
Language:English
Subjects:
Coils (windings)
Couplings
Density
Doubly-fed
Fault tolerance
fault-tolerant
Flux
flux-switching
Induced voltage
permanent magnet (PM)
Permanent magnets
Power factor
Rotors
Stator windings
Stators
Switching
Topology
Torque
torque density
Windings
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Summary:In this article, a novel doubly-fed flux-switching permanent magnet (DF-FSPM) machine is proposed, whose armature windings are wound on both stator poles and rotor teeth. Different from the conventional FSPM machine in which the armature windings are only located in the stator, the rotor slot area is fully utilized in the DF-FSPM machine to improve the electrical loadings and, thus, the torque density. Moreover, it has the potential of fault-tolerant operation, since it comprises two sets of armature windings, which can work individually. The topology and the operating principle of the machine are introduced with reference to a 12-stator-pole/10-rotor-tooth DF-FSPM machine. The electromagnetic performances of the optimized DF-FSPM machine and its FSPM counterpart machine are compared, including the induced voltage, inductances, torque capability, flux weakening capability, efficiency, and power factor. It shows that the DF-FSPM machine can exhibit about 46.5% higher torque density than the FSPM machine, while its torque production per magnet volume is also improved by about 39.6%. In addition, the efficiency and power factor of the DF-FSPM machine are higher than those of the FSPM machine. Finally, experimental validation is conducted on a prototype machine.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2019.2959504