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Simple Fault Diagnosis Based on Operating Characteristic of Brushless Direct-Current Motor Drives

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6 Author(s)
Byoung-Gun Park ; Department of Electrical Engineering, Hanyang University, Seoul, Korea ; Kui-Jun Lee ; Rae-Young Kim ; Tae-Sung Kim
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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.

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IEEE Transactions on Industrial Electronics  (Volume:58 ,  Issue: 5 )