Design and analysis of a five-phase permanent-magnet synchronous motor for fault-tolerant drive

Muhammad H. Iftikha, Byung‐Gun Park, Ji‐Won Kim

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Abstract

Reliability is a fundamental requirement in electric propulsion systems, involving a particular approach in studies on system failure probabilities. An intrinsic improvement to the propulsion system involves introducing robust architectures such as fault-tolerant motor drives to these systems. Considering the potential for hardware failures, a fault-tolerant design approach will achieve reliability objectives without recourse to optimized redundancy or over-sizing the system. Provisions for planned degraded modes of operation are designed to operate the motor in fault-tolerant mode, which makes them different from the pure design redundancy approach. This article presents how a five-phase permanent-magnet synchronous motor operates under one- or two-phase faults, and how the system reconfigures post-fault motor currents to meet the torque and speed requirement of reliable operation that meets the requirements of an electric propulsion system.
Original languageEnglish
Article number514
Number of pages17
JournalEnergies
Volume14
Issue number2
DOIs
Publication statusPublished - 19 Jan 2021

Keywords

  • multiphase motor
  • fault tolerant drive
  • electric propulsion

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