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Energies 2015, 8(5), 3640-3660; doi:10.3390/en8053640

Comparative Study of a Fault-Tolerant Multiphase Wound-Field Doubly Salient Machine for Electrical Actuators

Aero-Power Science Technology Center, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Author to whom correspondence should be addressed.
Academic Editor: Paul Stewart
Received: 3 November 2014 / Revised: 19 March 2015 / Accepted: 20 April 2015 / Published: 29 April 2015
(This article belongs to the Special Issue Electrical Power and Energy Systems for Transportation Applications)
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Abstract

New multiphase Wound-Field Doubly Salient Machines (WFDSMs) for electrical actuators with symmetric phases are investigated and compared in this paper. With a comparative study of the pole number and pole arc coefficient, the salient pole topology of the three-phase, four-phase, five-phase, and six-phase WFDSMs with little cogging torque is presented. A new winding configuration that can provide symmetrical phases for the multiphase WFDSMs is proposed. Suitable fault-tolerant converters for the multiphase WFDSM are presented. With the simulated results in terms of the pole topology, flux linkage, back EMF and converters, it can be concluded that the pole numbers of the new five-phase WFDSM are very large. The high accuracy position sensors should be required to make the five-phase WFDSM commutate frequently and accurately at a high speed. The four-phase and the six-phase WFDSM can be divided into two isolated channels, and both of them have a good performance as a fault-tolerant machine. All of the investigations are verified by finite element analysis results. View Full-Text
Keywords: wound-field doubly salient machine; electrical actuation; fault-tolerant; multiphase wound-field doubly salient machine; electrical actuation; fault-tolerant; multiphase
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Shi, L.-W.; Zhou, B. Comparative Study of a Fault-Tolerant Multiphase Wound-Field Doubly Salient Machine for Electrical Actuators. Energies 2015, 8, 3640-3660.

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