永磁电机及其驱动系统容错技术综述

Overview of Fault-tolerant Technologies of Permanent Magnet Brushless Machine and Its Control System

永磁电机具有效率高、功率密度高、控制灵活的特点,研究永磁电机及其驱动系统的容错技术有利于提升其在电动汽车、新能源发电和航空电力作动系统等领域的应用潜力。对近年来永磁电机驱动系统容错技术领域的研究成果和最新进展进行归纳和总结:系统地将容错电机本体分为"冗余拓扑"设计和"结构优化"设计来进行归纳总结;将容错算法归纳为"基于电流矢量重构技术"和"基于电压矢量重构技术"来进行类比分析;三相和多相逆变器系统容错技术;位置/速度传感器和电流传感器故障容错方案,包括冗余传感器和无传感观测器技术。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,为永磁电机及其驱动系统容错技术研究工作的进一步开展提供了参考。

With the merits of high efficiency,high power density and flexible control ability,permanent magnet(PM)machines and their fault-tolerant technologies of driven system have gathered more and more attention,especially in the fields of electric vehicles,renewable power generation systems and electric actuation systems.The state-of-art fault-tolerant technologies for PM machine driven systems are concluded and summarized,including:1)the design of fault-tolerant topology is systematically divided into redundant topology design and structure optimization design;2)the fault-tolerant control methods are classified into current vector reconstruction technology and voltage vector reconstruction technology for analogy analysis;3)fault tolerance technology of three-phase and multi-phase inverter systems is summarized;4)fault tolerant strategies for position/speed sensors and current sensors,including redundant sensors and sensorless technologies.Finally,the main problems and future prospect of fault-tolerant technology are given,providing a reference for the further research of fault-tolerant technology of PM machines and its driven systems.