Turn to Turn Fault Detection, Discrimination, and Faulty Region Identification in the Stator and Rotor Windings of Synchronous Machines Based on the Rotational Magnetic Field Distortion

Afrandideh, Saeed; Milasi, Mostafa Eshaghi; Haghjoo, Farhad; Cruz, Sérgio M. A.

doi:10.1109/tec.2019.2951528

Cited by 35 publications

(18 citation statements)

References 43 publications

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“…In Equations ( 2)-(4), α j is the maximum correlation coefficient of the sensor; β j is the related distribution value of sensor j; R j is the reliability coefficient of sensor j; N c is the number of target modes; N is the total number of sensors; W j is the environmental weighting coefficient of sensor j with a value range of (0,1); C j (A i ) is the correlation coefficient of sensor j corresponding to the objective function A i , which can be expressed by the membership function [19,20] shown in Equation (5).…”

Section: Calculation Of the Basic Trust Distribution Functionmentioning

confidence: 99%

“…Calculated using Equation (5), the correlation coefficient between the fundamental wave amplitude difference of the air gap magnetic density, and the synchronous condenser failure and normal is as follows:…”

Section: Basic Trust Allocation Function After Commutation Failurementioning

confidence: 99%

“…When the deviation exceeds a certain value, it may be considered that the generator undergoes an interturn short circuit fault. Another study [5] proposed to use specific spectral components of the differential induced voltage monitored by two sensors installed at the circumference of the air gap to detect the interturn short circuit fault. Furthermore, another previous research [6] has established that the rotor winding vibration caused by a short circuit fault of the excitation winding is not only caused by the unbalanced air gap magnetic field, but is also related to the temperature field of the rotor.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fault diagnosis method based on multi‐source information fusion for weak interturn short circuit in synchronous condensers

et al. 2021

IET Electric Power Appl

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The interturn short circuit fault in rotor windings is a common fault in a synchronous condenser. Aiming at the early faults that are difficult to detect, the theory of multi-source information fusion is applied herein for the identification of short circuit faults in the rotor windings of a synchronous condenser. Firstly, a field-circuit-network coupling model of a synchronous condenser for high-voltage direct current (HVDC) transmission was constructed using SIMULINK/ANSYS. The air gap magnetic flux density of the interturn short circuit regulator with a rotor winding was obtained, via co-simulation, before and after the commutation failure in the HVDC inverter. Further, threedimensional models of the stator and rotor of the synchronous condenser were established using ANSYS/Workbench; the stator and rotor vibration responses of the synchronous condenser were monitored before and after the system commutation failure. Secondly, three types of evidence bodies were obtained based on the Dempster-Shafer evidence theory. The results show that the confidence level of the evidence body of each faulted component of the synchronous condenser increases, and the accuracy of fault recognition also increases upon system commutation failure. Finally, a three-pairpole synchronous motor (MJF-30-6) was used to simulate the rated and overexcited operations of the synchronous condenser for experimental verification of the feasibility of the proposed method. This method provides a reference for the identification of weak interturn short circuit faults in synchronous condensers.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Section: Calculation Of the Basic Trust Distribution Functionmentioning

confidence: 99%

Section: Basic Trust Allocation Function After Commutation Failurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fault diagnosis method based on multi‐source information fusion for weak interturn short circuit in synchronous condensers

et al. 2021

IET Electric Power Appl

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“…The open circuit fault can be detected by analyzing the phase current waveform and the switch on/off state while the short circuit can be alarmed by monitoring the overcurrent [6]. Thus, the stator turn fault becomes the most challenging fault for diagnosis [7].…”

Section: Introductionmentioning

confidence: 99%

A Novel Stator Turn Fault Detection Technique by Using Equivalent High Frequency Impedance

Wang

et al. 2020

IEEE Access

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Stator turn fault is the most serious failure in the electrical machine drive which requires immediate detection techniques. Under such a turn fault, the fundamental change is that the high frequency (HF) impedance of the fault phase is significantly reduced due to the flux nullifying effect of the fault turns. Thus, this paper proposes a novel turn fault detection technique by using the equivalent HF impedance. It is derived by the HF voltage and current signals which are obtained by processing the phase voltages and currents with a bandpass filter. The effectiveness of the proposed is verified by extensive simulation and experimental tests on both surface mounted and interior PM machines. It is demonstrated that the performance of the proposed detection method is superior than the conventional HF current ripple based method. The investigation also confirms that the fault can be detected at an early stage by the proposed method.INDEX TERMS Turn fault detection, high frequency, current harmonic, voltage harmonic, impedance, bandpass filter.

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“…Typical motor failures are classified into three types: electrical, magnetic, and mechanical failures. The electrical faults include winding interturn short-circuit faults, winding open-circuit faults, winding resistance imbalance, and broken rotor bars [1,2]. The magnetic faults include magnet damage and demagnetization, and iron core defects [3].…”

mentioning

confidence: 99%

Stray Flux-Based Rotation Angle Measurement for Bearing Fault Diagnosis in Variable-Speed BLDC Motors

Wang

Cao

et al. 2021

IEEE Trans. Energy Convers.

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Angle of rotation is a key parameter in motor fault diagnosis under varying speed conditions, and is usually measured by an optical encoder. However, the use of encoders is intrusive and in many scenarios its signal is difficult to access due to technical or commercial reasons. In this study, a novel rotation angle measurement method based on stray flux analysis is proposed and applied to bearing fault diagnosis of brushless direct-current (BLDC) motors. The measurement accuracy of the proposed method is comparable to that from an encoder. The developed method is flexible, noninvasive, and nondestructive. It is easy to implement and eliminates the need for long cables and access of the motor control system. The proposed method can be extended to the diagnosis of motor electrical and drive faults. If implemented with an Internet of Things (IoT) or a hand-held device, it can further improve the reliability of sensorless motor drive systems in industrial automation so as to meet Industry 4.0 requirements. Index terms-Bearing fault, BLDC motors, fault diagnosis, rotation angle measurement, stray flux, vibration signal analysis I. INTRODUCTION Brushless direct current (BLDC) motors are a type of common pivotal actuators used in the field of industrial

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Turn to Turn Fault Detection, Discrimination, and Faulty Region Identification in the Stator and Rotor Windings of Synchronous Machines Based on the Rotational Magnetic Field Distortion

Cited by 35 publications

References 43 publications

Fault diagnosis method based on multi‐source information fusion for weak interturn short circuit in synchronous condensers

Fault diagnosis method based on multi‐source information fusion for weak interturn short circuit in synchronous condensers

A Novel Stator Turn Fault Detection Technique by Using Equivalent High Frequency Impedance

Stray Flux-Based Rotation Angle Measurement for Bearing Fault Diagnosis in Variable-Speed BLDC Motors

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