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http://dx.doi.org/10.6113/TKPE.2010.15.3.167

A Fault Detecting Scheme for Short-Circuited Turn in a Permanent Magnet Synchronous Motor through a Current Harmonic Monitoring  

Kim, Kyeong-Hwa (서울산업대 전기공학과)
Gu, Bon-Gwan (전자부품연구원 지능메카트로닉스연구센터)
Jung, In-Soung (전자부품연구원 지능메카트로닉스연구센터)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.15, no.3, 2010 , pp. 167-178 More about this Journal
Abstract
To diagnose a stator winding fault caused by a short-circuited turn in a permanent magnet synchronous motor (PMSM), an on-line based fault detecting scheme during motor operation is presented. The proposed scheme is based on monitoring the second-order harmonic components in q-axis current obtained through the harmonic analysis and a winding fault is detected by comparing these components with those in normal conditions. The linear interpolation method is employed to determine harmonic data in arbitrary normal operating conditions. To verify the effectiveness of the proposed fault detecting scheme, a test motor to allow inter-turn short in the stator winding has been built. The entire control system including harmonic analysis algorithm and fault detecting algorithm is implemented using DSP TMS320F28335. The proposed scheme does not require any additional hardware and can effectively detect a fault during motor operation so long as the steady-state condition is satisfied.
Keywords
Fault detecting scheme; Stator turn-fault; Current harmonics; DSP TMS320F28335; PMSM;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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