Abstract
To improve the performance of the traditional fault-tolerant permanent magnet (PM) motor, the design and optimal schemes of dual-winding fault-tolerant permanent magnet motor (DWFT-PMM) are proposed and investigated. In order to obtain small cogging torque ripple and inhibiting the short-circuit current, the air gap surface shape of the PM and the anti short-circuits reactance parameters are designed and optimized. According to the actual design requirements of an aircraft electrical actuation system, the parameters, finite element analysis and experimental verification of the DWFT-PMM after optimal design are presented. The research results show that the optimized DWFT-PMM owns the merits of strong magnetic isolation, physics isolation, inhibiting the short circuit current, small cogging torque ripple and high fault tolerance.
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