NDLI: Armature Design of Low-Voltage FSPMSMs: An Attempt to Enhance the Open-Circuit Fault Tolerance Capabilities

Content Provider	IEEE Xplore Digital Library
Author	Abdennadher, I. Masmoudi, A.
Copyright Year	1972
Abstract	This paper deals with the torque production capabilities of fractional-slot permanent-magnet synchronous machines (FSPMSMs) under open-circuit faulty conditions. The developed approach considers a class of FSPMSMs where an armature is inserted in double-layer slots and is arranged by connecting in parallel the coils or suitable combinations of coils of each phase. In light of this, the machine operates at a low-voltage level. Accordingly, its integration within 42-V-technology-based automotive systems becomes much more realistic. Moreover, the adopted approach leads to a significant improvement in the fault tolerance capability under an open-circuit faulty operation. Indeed, a failure affecting a coil would discard one branch among the parallel branches of the corresponding phase, rather than affecting the total phase in FSPMSMs with series-connected coils in the armature. The approach is initiated by an identification allied to a characterization of the slot/pole combinations enabling the parallel connection of the FSPMSM phase coils or group of coils. Then, this paper considers the selected three-phase and five-phase FSPMSMs. Following an assessment of their healthy operation, the torque values developed by both machines are predicted using a 2-D finite-element analysis under different open-circuit faulty scenarios. Then, a simple control strategy based on the readjustment of the reference sinusoidal current initial phases is proposed to recover the torque production capability of both machines under a branch open-circuit fault.
Sponsorship	IEEE Industry Applications Society
Starting Page	4392
Ending Page	4403
Page Count	12
File Size	2736260
File Format	PDF
ISSN	00939994
Volume Number	51
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Fault tolerance Fault tolerant systems Windings Topology Torque Low voltage healthy/faulty operation Fractional-slot PM machines low voltage three/five phase machines star of slots approach parallelconnected coils back-EMFs torque production capability/recovery Back electromotive force (EMF) fractional-slot permanent-magnet (PM) machines (FSPMSMs) low-voltage three-phase/five-phase machines parallel-connected coils
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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