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首页> 外文期刊>International journal of circuit theory and applications >A cost-effective and fault-tolerant brushless direct current drive with open-stator windings for low power electric vehicles
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A cost-effective and fault-tolerant brushless direct current drive with open-stator windings for low power electric vehicles

机译：A cost-effective and fault-tolerant brushless direct current drive with open-stator windings for low power electric vehicles

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摘要

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.

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