Dual-inverter-driven open-end winding brushless direct current motor (OEWBLDCM) drives are amenable for the implementation of some interesting fault-tolerant features, which could find useful applications in low power electric vehicles (EVs). The power semiconductor switching devices in the dual-inverter system are vulnerable to the development of open-circuit faults (OCFs) and the short-circuit faults (SCFs). This paper investigates the possibility of imparting complete fault-tolerant capability to EVs, which employ OEWBLDC motors for propulsion. With the proposed dynamic post-fault reconfiguration of the power circuit and the reconnection of the battery banks, it is possible to deliver the rated (i.e., 100%) post-fault output power to the BLDC motor, despite the failure of a power semiconductor switching device (because of either an OCF or an SCF) in the dual-inverter system. The feasibility evaluation of the proposed fault-tolerant drive reveals that the aforementioned objectives are realizable at an affordable hike in the raw material cost of the propulsion system. Simulation studies and Experimental verification on a laboratory prototype validate the proposed fault-tolerant OEWBLDCM drive.

中文翻译：

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一种用于低功率电动汽车的具有开路定子绕组的经济高效且容错的无刷直流驱动器

双逆变器驱动的开放式绕组无刷直流电机 (OEWBLDCM) 驱动器适用于实现一些有趣的容错功能，这些功能可以在低功率电动汽车 (EV) 中找到有用的应用。双逆变器系统中的功率半导体开关器件容易发生开路故障 (OCF) 和短路故障 (SCF)。本文研究了为使用 OEWBLDC 电机进行推进的电动汽车提供完全容错能力的可能性。通过电源电路的动态故障后重新配置和电池组的重新连接，可以向 BLDC 电机提供额定（即 100%）故障后输出功率，尽管双逆变器系统中的功率半导体开关器件发生故障（由于 OCF 或 SCF）。对所提出的容错驱动器的可行性评估表明，上述目标可以通过推进系统原材料成本的可承受的上涨来实现。实验室原型的仿真研究和实验验证验证了所提出的容错 OEWBLDCM 驱动器。