A Unified Analysis of the Fault Tolerance Capability in Six-Phase Induction Motor Drives

• Published in: IEEE Transactions on Power Electronics
• Main Author: Munim W.N.W.A.; Duran M.J.; Che H.S.; Bermudez M.; Gonzalez-Prieto I.; Rahim N.A.
• Format: Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers Inc. 2017
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019422768&doi=10.1109%2fTPEL.2016.2632118&partnerID=40&md5=8680bacbe8f2875caa0c058e6a23b72a

The fault tolerance of electric drives is highly appreciated at industry for security and economic reasons, and the inherent redundancy of six-phase machines provides the desired fault-tolerant capability with no extra hardware. For this reason some recent research efforts have been focused on the fault-tolerant design, modeling, and control of six-phase machines. Nevertheless, a unified and conclusive analysis of the postfault capability of six-phase machine is still missing. This paper provides a full picture of the postfault derating in generic six-phase machines and a specific analysis of the fault-tolerant capability of the three mainstream six-phase induction machines (asymmetrical, symmetrical, and dual three phase). Experimental results confirm the theoretical post fault current limits and allow concluding, which is the best six-phase machine for each fault scenario and neutral arrangement. © 1986-2012 IEEE.