双绕组永磁容错电机驱动的垂直提升系统研究
Vertical Lift System Based on a Dual-Winding Fault-Tolerant Permanent Magnet Motor
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摘要: 针对现有容错电机驱动系统的不足,提出一种针对直升机绞车用双绕组永磁容错电机驱动的垂直提升系统,具有可靠性高、功率密度高、提升索降工况双向控制等优点。设计了容错提升系统的系统拓扑结构和双绕组永磁容错电机结构。分析了系统的工作原理,并分别对系统的提升工况和索降工况进行了数学模型的建立。为提高系统的缺相运行特性,提出了基于转速、电流、电压双向控制(电动制动)的热备份余度容错控制策略,以及开路故障诊断与余度通信策略。通过系统试验平台的搭建,对双绕组永磁容错电机驱动的垂直提升系统分别进行了提升工况正常态、绕组开路故障态和索降工况正常态、绕组开路故障态的试验验证。试验结果表明,当系统无论是工作在提升工况,还是索降工况,其发生绕组开路故障时,系统的输出性能仍可保持不变,实现了系统开路故障容错,证明了容错提升系统结构设计的合理性及容错控制策略的正确性。Abstract: A new vertical lift system based on a dual-winding fault-tolerant permanent magnet（DFPM） motor for helicopter winch application was proposed and investigated. The proposed vertical lift system incorporates the merits of high reliability, high power density and two-way（load hoisting and dropping） control. To investigate the performance of the proposed vertical lift system, the mathematical model of the proposed vertical lift system under load hoisting and dropping conditions were derived. Then, to improve the fault-tolerant performance, the redundant fault-tolerant control strategy based on speed, current, voltage two-way（electric and braking） control was proposed. Furthermore, the electromagnetic performances of the vertical lift system under load hoisting and dropping conditions were verified by experiments. The research results show the effectiveness of the proposed fault-tolerant control strategy and the high performance of the fault-tolerant characteristic of the proposed vertical lift system.
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