NDLI: Investigation of fault-tolerant capability of five-phase doubly salient electromagnetic generator

Content Provider	IET Digital Library
Author	Zhao, Yao Wang, Huizhen Xiao, Lan
Abstract	A new topology of five-phase fault-tolerant doubly salient electromagnetic generator (FTDSEG) is proposed for high reliability applications in this paper. The analysis of no-load and loading operations shows the potential fault-tolerance capability. On the basis of comparative analysis on structure characteristics between five-phase non-FTDSEG (NFTDSEG) and five-phase FTDSEG, the variation of rotor pole number from NFTDSEG to FTDSEG is revealed. Meanwhile, the flux linkage and electromotive forces (EMFs) of five-phase NFTDSEG and five-phase FTDSEG are investigated with finite element method and five faults of five-phase FTDSEG are analysed in detail. Especially when single phase short-circuit fault happens, the magnetic field of the motor, flux linkage of short-circuit phase and short-circuit currents without load are investigated in four different short-circuit moments and the fault is in consideration of armature winding resistance. The ultimate variation trend of flux linkage is irrelevant to moment when the short-circuit fault happens. The flux linkage and EMF of short-circuit phase are also analysed. The laws of fault operating influence on external and power characteristics of FTDSEG are researched in five faults with different exciting currents. The fault-tolerant ability of five-phase FTDSEG has been demonstrated by the experimental results.
Starting Page	80
Ending Page	93
Page Count	14
ISSN	17518660
Volume Number	9
e-ISSN	17518679
Issue Number	Issue 1, Jan (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/9/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2014.0058
Journal	IET Electric Power Applications
Publisher Date	2014-12-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.C. Machine Armature Winding Resistance D.C. Machines Electric Generators Electric Potential Electromotive Forces EMF Fault Operating Influence Fault Tolerance Fault-tolerant Capability Finite Element Analysis Finite Element Method Five-phase Doubly Salient Electromagnetic Generator Five-phase Non-FTDSEG Flux Linkage Machine Windings Magnetic Field NFTDSEG Rotor Pole Number Short-circuit Current Short-circuit Moments Single Phase Short-circuit Fault
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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