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A Novel Dual-Rotor, Axial Field, Fault-Tolerant Flux Switching Permanent Magnet Machine with High Torque Performance

Title
A Novel Dual-Rotor, Axial Field, Fault-Tolerant Flux Switching Permanent Magnet Machine with High Torque Performance
Author
권병일
Keywords
Axial field; direct drive; fault tolerant; finite-element method (FEM); flux-switching permanent magnet machine (FSPMM); phase-group concentrated-coil winding; torque; winding factor; GENERATOR
Issue Date
2015-11
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON MAGNETICS, v. 51, No. 11
Abstract
This paper proposes a novel dual-rotor, axial field, fault-tolerant flux-switching permanent magnet machine (FSPMM) with high-torque performance for direct-drive applications, in which the phase-group concentrated-coil windings and the unaligned arrangement of the two rotors are used. The adoption of the phase-group concentrated-coil windings is made to obtain a unity displacement winding factor, and to enhance the flux-focusing effects together with the use of a spoke-type PM configuration. The unaligned arrangement of the two rotors will help to achieve increased flux magnification and also to suppress the cogging torque and the torque ripple. In particular, the proposed configuration for FSPMMs exhibits the advantage of fault tolerance, benefiting from the electromagnetic isolation of phases and a dual three-phase channel of supply. The operating principle and the design criteria of the proposed FSPMM are discussed in detail. To highlight the advantages of the proposed FSPMM, two conventional FSPMMs are adopted for comparison under the same operating conditions based on a 3-D finite-element method. As a result, it is demonstrated that the proposed FSPMM exhibits significantly improved performance with not only higher torque (power) density but also lower cogging torque and torque ripple, compared with the conventional FSPMMs.
URI
http://ieeexplore.ieee.org/document/7124481/http://hdl.handle.net/20.500.11754/36174
ISSN
0018-9464; 1941-0069
DOI
10.1109/TMAG.2015.2445926
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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