Simple fault diagnosis based on operating characteristic of brushless direct-current motor drives

Byoung Gun Park, Kui Jun Lee, Rae-Young Kim, Tae Sung Kim, Ji Su Ryu, Dong Seok Hyun

Research output: Contribution to journalArticle

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In this paper, a simple fault diagnosis scheme for brushless direct-current motor drives is proposed to maintain control performance under an open-circuit fault. The proposed scheme consists of a simple algorithm using the measured phase current information and detects open-circuit faults based on the operating characteristic of motors. It requires no additional sensors or electrical devices to detect open-circuit faults and can be embedded into the existing drive software as a subroutine without excessive computation effort. The feasibility of the proposed fault diagnosis algorithm is proven by simulation and experimental results.

Original languageEnglish
Article number5560811
Pages (from-to)1586-1593
Number of pages8
JournalIEEE Transactions on Industrial Electronics
Issue number5
Publication statusPublished - 2011 May 1



  • AC motor drives
  • brushless direct-current (BLDC) motors
  • fault detection
  • fault diagnosis
  • fault-tolerant control
  • inverter fault
  • open-circuit fault
  • power device
  • reliability
  • switch damage

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