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In this paper, a new electric drive system based on a six-phase ten-pole dual-winding fault-tolerant permanent magnet (DFPM) motor for aerospace applications is proposed and investigated. The proposed DFPM motor consists of optimal surface-mounted permanent magnet rotor and 12 slots stator with two sets of independent three-phase concentrated armature windings on alternate teeth, which incorporates the merits of high power density and high efficiency of permanent magnet (PM) motor and high fault-tolerance of dual-winding motor. To achieve the fault-tolerant performance of the electric drive system, the redundant fault-tolerant control strategy based on the failure diagnosis and redundancy communication is proposed and applied to the electric drive system. Then, the operational performance of the drive system under open-circuit and short-circuit fault have been verified by simulation and experiment. The research results show that the open-circuit and short-circuit fault can be detected immediately and the output performance of the DFPM motor under fault conditions is almost the same as normal condition, which verified the proposed electric drive system, DFPM motor and fault-tolerant control strategy. Index Terms-Dual-winding motor, fault-tolerant drive, redundancy, open circuit or short circuit fault, permanent-magnet machine.  Manuscript

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