Inverter fault-tolerant operation of brushless DC motor drives

Hai Lin, Weisheng Yan, Hong Li

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A novel inverter fault-tolerant control scheme is proposed to drive brushless dc motor (BLDC) based on current character of the traditional six-switch three phases converter BLDC. Analysing a fault-tolerant inverter and its three fault-tolerant schemes (phase A fault-tolerant, phase B fault-tolerant, and phase C fault-tolerant). A general conclusion is drawn that BLDC can be controlled by controlling two faultless phases currents when inverter is faulty. In the proposed strategy, three phase currents are shaped directly by two faultless phases current hysteresis controllers, and the conducting sequence of four power switches is rearranged by four asymmetric voltage vectors. The simulation and experimental results demonstrate the strategy is able to operate stably and continuously with good dynamic performance.

Original languageEnglish
Pages (from-to)53-57
Number of pages5
JournalHsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume43
Issue number2
StatePublished - Feb 2009

Keywords

  • Brushless DC motor
  • Current control
  • Fault-tolerant converter

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