Robust Control of Fault-Tolerant Permanent-Magnet Synchronous Motor for Aerospace Application With Guaranteed Fault Switch Process


This paper proposes a novel ten-section fault-tolerant permanent-magnet synchronous motor (FTPMSM) with 2 stators and 2 rotors on the same shaft. Furthermore, a focused, single-layer, and alternate-teeth-wound winding is adopted to enhance the fault isolation capacity of the motor. Additionally, we tend to propose a replacement approach to the speed management of the developed motor, which takes the electromagnetic torque ripple in the fault switch method into consideration. The control can guarantee the uniform boundedness and uniform final boundedness of the system irrespective of the load disturbance and also the parameter variation, significantly for the fault switch method when a fault occurrence before the fault-tolerant control can take effect. Moreover, an optimal torque management is adopted to further improve the fault-tolerant performance, that allows a ripple-free torque operation under open-circuit and short-circuit fault conditions. Simulation and experimental results show that the FTPMSM system with the proposed control strategy has excellent fault-tolerant performance and sensible robustness. This paper provides an innovative approach by using a sturdy control for a speed loop to ensure the fault-tolerant performance of the proposed motor system underneath traditional and fault conditions, even in the fault switch method.

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