Journal of Zhejiang University SCIENCE A

, Volume 9, Issue 2, pp 165–172 | Cite as

Diagnosis of stator faults in induction motor based on zero sequence voltage after switch-off



To improve the accuracy of the stator winding fault diagnosis in induction motor, a new diagnostic method based on the Hilbert-Huang transform (HHT) was proposed. The ratio of fundamental zero sequence voltage to positive sequence voltage after switch-off was selected as the stator fault characteristic, which could effectively avoid the influence of the supply unbalance and the load fluctuation, and directly represent the asymmetry in the stator. Using the empirical mode decomposition (EMD) based on HHT, the zero sequence voltage after switch-off was decomposed and the fundamental component was extracted. Then, the fault characteristic can be acquired. Experimental results on a 4-kW induction motor demonstrate the feasibility and effectiveness of this method.


Induction motor Stator fault diagnosis Hilbert-Huang transform (HHT) Zero sequence voltage Empirical mode decomposition (EMD) 

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© Springer-Verlag 2008

Authors and Affiliations

  1. 1.School of Electrical EngineeringZhejiang UniversityHangzhouChina

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