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Design and Optimization of dual-winding Fault-Tolerant Permanent Magnet motor

CES Transactions on Electrical Machines and Systems 2019年第1期3卷 45-53页

作者： Xuefeng Jiang Shaoshuai Wang Qiang Li Yufei Gao Nanjing University of Science and Technology. the M.S degree in School of Automation Nanjing University of Science and Technology Department of Electrical Engineering School of AutomationNanjing University of Science and Technology

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.

关键词： dual-winding motor design and optimization fault-tolerance finite element analysis short-circuit fault

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A strong robustness open-circuit fault diagnosis strategy for novel fault-tolerant electric drive system based on d-q-axis current signal

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Chinese Journal of Aeronautics 2021年第10期34卷 115-127页

作者： Xuefeng JIANG Shaoshuai WANG Jie LI Daoyu WU Wenxin HUANG Zhenmao HAN School of Automation Nanjing University of Science and TechnologyNanjing 210094China College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing 211106China

To diagnose the Open-Circuit(OC)fault in the novel fault-tolerant electric drive system,based on d-q-axis current signal,a strong robustness diagnosis strategy is proposed and investigated.Fewer independent power supplies and converters are required in the novel fault-tolerant electric drive system based on dual-winding Permanent Magnet motor(DWPMM),and the system’s reliability,usage ratio and power density have been improved compared to the conventional fault-tolerant motor drive system.However,the novel fault-tolerant electric drive system has the OC fault diagnostic false alarms issue when load changes suddenly or under light-load condition.And it lacks the research on the diagnostic method when the system encounters intermittent OC fault in power switches.By theory derivation,simulation and experimental verification,it can be concluded that the proposed strong robustness OC fault diagnosis strategy based on d-q-axis current signal can overcome the OC fault diagnostic false alarms issue when load changes suddenly or under light-load condition.And it can detect and locate the OC fault of single-phase winding in real time,and diagnose the intermittent OC fault of power switches.

关键词： dual-winding motor Electric drive system Fault-tolerant system Open-circuit fault diagnosis Permanent magnet motor Strong robustness

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