Interturn short circuit (ITSC) fault is a common in electric machines, which may severely damage the machines if no protective measure taken time. There are numerous diagnosis methods under steady-state condition. However, there relatively limited research on dynamic conditions. The operation of motors, such as cars, very scenario. Hence, this paper proposes search-coil based online method for ...

The traction motor (TM) is an essential part of the high-speed train, health condition which determines quality and safety vehicle. Hence, this study proposed a novel approach to diagnosing predicting TM stator interturn short-circuit fault (SISCF). Based on Park vector (PV) current, method could overcome interference current sensor errors, null shift, frequency fluctuations in actual condition...

This paper studies the electromechanical characteristics of synchronous generators under dynamic stator interturn short circuit (DSISC). First, air gap magnetic flux density (MFD) generator normal and DSISC fault was obtained. Then, expression for phase current electromagnetic torque (EMT) were After this, EMT analyzed by finite element analysis (FEA). Finally, measured CS-5 different condition...

This paper proposes a diagnosis method for a multipole permanent magnet synchronous motor (PMSM) under an interturn short circuit fault. Previous works in this area have suffered from the uncertainties of the PMSM parameters, which can lead to misdiagnosis. The proposed method estimates the q-axis inductance (Lq) of the faulty PMSM to solve this problem. The proposed method also estimates the f...

Taking the traction motor of CRH2 high-speed train as research object, this paper proposes a diagnosis method based on random forest and XGBoost for compound fault resulting from stator interturn short circuit air gap eccentricity. First, U-phase V-phase currents are used signal then Savitzky–Golay filtering is noise deduction signal. Second, wavelet packet decomposition to extract composite fe...

A running transformer frequently experiences interturn faults; they are typically difficult to detect in their early stages but eventually progress short circuits, which cause damage the transformer. Therefore, finding out fault mechanism of full process can provide a theoretical basis for detection. In this paper, an electromagnetic-solid mechanics coupled finite element model consistent with ...

Early detection of faults in stator winding of induction motor is crucial for reliable and economical operation of induction motor in industries. Whereas major winding faults can be easily identified from supply currents, minor faults involving less than 5 % of turns are not readily discernible. The present contribution reports experimental results for monitoring of minor short circuit faults i...