电动汽车用转子永磁型无刷电机与控制系统容错技术综述
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摘要
转子永磁型无刷电机具有效率高、功率密度高、控制灵活等特点,在电动汽车领域得到广泛应用。电动汽车对电机驱动系统可靠性有很高的要求,容错技术是提高电机驱动系统可靠性的重要途径。从电机结构容错设计和容错控制策略两方面对转子永磁型无刷电机系统容错技术进行系统地阐述和分析。在电机设计方面,通过电机的相间隔离设计和增加辅助励磁源设计来分析电机绕组故障与永磁体退磁故障容错技术;在电机控制方面,采用相应的容错控制策略来讨论电机绕组故障和永磁体退磁故障以及电机驱动系统中逆变器故障容错技术。最后,指出目前容错技术存在的主要问题以及未来发展方向,为电动汽车用电机驱动系统容错技术研究工作的进一步开展提供了参考。
Due to the merits of high efficiency, high power density and being applicable of various control strategies, the rotor permanent magnet(PM) brushless machines have been widely used in electric vehicles. To meet the requirements of high reliability for motor driving system of electric vehicles,the fault-tolerant technology has been developed. In this paper,the fault-tolerant technologies of the rotor PM brushless machine were systematically descried and analyzed from two aspects: fault-tolerant design of motor topology and fault-tolerant control strategies. In the aspect of motor design,the fault-tolerant technology of motor winding fault and PM demagnetization fault was analyzed by the motor interphase isolation design and the added auxiliary excitation source design. In the aspect of motor control, the fault-tolerant technology of motor winding fault, PM demagnetization fault and inverter fault in the motor drive system was discussed by the corresponding fault-tolerant control strategies. Finally, the main problems exist in the present fault-tolerant technology and the future development of fault-tolerant technology were discussed, which provides the promising approach to further research the fault-tolerant technologies of motor driving system for electric vehicles.
Due to the merits of high efficiency, high power density and being applicable of various control strategies, the rotor permanent magnet(PM) brushless machines have been widely used in electric vehicles. To meet the requirements of high reliability for motor driving system of electric vehicles,the fault-tolerant technology has been developed. In this paper,the fault-tolerant technologies of the rotor PM brushless machine were systematically descried and analyzed from two aspects: fault-tolerant design of motor topology and fault-tolerant control strategies. In the aspect of motor design,the fault-tolerant technology of motor winding fault and PM demagnetization fault was analyzed by the motor interphase isolation design and the added auxiliary excitation source design. In the aspect of motor control, the fault-tolerant technology of motor winding fault, PM demagnetization fault and inverter fault in the motor drive system was discussed by the corresponding fault-tolerant control strategies. Finally, the main problems exist in the present fault-tolerant technology and the future development of fault-tolerant technology were discussed, which provides the promising approach to further research the fault-tolerant technologies of motor driving system for electric vehicles.
引文
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