NDLI: A Novel Direct-Drive Dual-Structure Permanent Magnet Machine

Content Provider	IEEE Xplore Digital Library
Author	Shuangxia Niu Ho, S.L. Fu, W.N.
Copyright Year	1965
Abstract	By incorporating the merits of fractional-slot concentrated windings and Vernier machine structure, a new multi-pole dual-structure permanent magnet (PM) machine is proposed for low speed, direct-drive applications in this paper. In the outer stator, a fractional-slot concentrated winding is adopted to reduce the slot number and stator yoke height, hence saving space and improving torque density. In the inner stator, a Vernier structure is used to reduce the winding slots, thereby enlarging the slot area to accommodate more conductors, thus the inner stator space is fully utilized. Consequently, the merits of these two structures can be ingeniously integrated into one compact PM machine and the torque density is improved, cogging torque is reduced and the control flexibility with two sets of independent stator windings is increased. By using time-stepping finite element method with curvilinear elements for moving between the stator and the rotor, the steady state and transient performances of the PM machine are simulated and the validity of proposed dual-structure PM machine is verified.
Sponsorship	IEEE Magnetics Society
Starting Page	2036
Ending Page	2039
Page Count	4
File Size	392300
File Format	PDF
ISSN	00189464
Volume Number	46
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Permanent magnet machines Stator windings Machine windings Torque Copper Permanent magnets Forging Finite element methods Magnetic flux leakage Teeth Vernier structure Curvilinear element dual-structure finite-element method fractional-slot concentrated winding permanent magnetic motor
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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