Detection of inter-turn short-circuit at start-up of induction machine based on torque analysis

Pietrowski, Wojciech; Górny, Konrad

doi:10.1515/phys-2017-0101

Cited by 8 publications

(4 citation statements)

References 19 publications

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“…To effectively select the parameters by which the asynchronous motor diagnostics will be performed in order to determine the inter-turn short circuit in the stator windings, it is necessary to determine the design changes in the asynchronous motor caused by this defect. Studies conducted in [4][5] show that the inter-turn short circuit leads to asymmetrical modes in the stator winding. This is due to the fact that as a result of the inter-turn short circuit, both the resistant and inductive AC impedance's components of the phase, at which the circuit occurs, are reduced.…”

Section: Methods For Studying Processes In An Asynchronous Motor In Tmentioning

confidence: 99%

Imitation Modeling of an Inter-Turn Short Circuit of an Asynchronous Motor Stator Winding for Diagnostics of Auxiliary Electric Drives of Transport Infrastructure

Goolak¹,

Gerlici²,

Gubarevych³

et al. 2021

Communications

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A scientific approach to calculating the parameters and characteristics of an asynchronous motor in the inter-turn short circuit mode in one phase of the stator is proposed to create the foundations of a diagnostic complex for assessing the condition of asynchronous motors of the transport infrastructure. This approach consists of the fact that in the model with which the research is carried out, it is proposed to take into account changes in the mutual inductance of the motor when the AC impedance of one of the stator phases changes. Using a new approach to modeling processes occurring in an asynchronous motor during the inter-turn short circuit in one phase of the stator, pulsations of the torque on the motor shaft were studied for different values of the AC impedance and resistance of one of the stator winding phases, which corresponds to varying degrees of the inter-turn short circuits.

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Section: Methods For Studying Processes In An Asynchronous Motor In Tmentioning

confidence: 99%

Imitation Modeling of an Inter-Turn Short Circuit of an Asynchronous Motor Stator Winding for Diagnostics of Auxiliary Electric Drives of Transport Infrastructure

Goolak¹,

Gerlici²,

Gubarevych³

et al. 2021

Communications

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“…Usually, currents are used for fault diagnosis. However, there are methods that are based on other parameters like electromagnetic torque [12,13], vibration signal [14] and mechanical speed [15].…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of ITSC fault in the electrical vehicle powertrain system through signal processing analysis

Ouamara¹,

Boukhnifer²,

Chaibet³

et al. 2023

Diagnostyka

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The three-phase induction motor is well suited for a wide range of mobile drives, specifically for electric vehicle powertrain. During the entire life cycle of the electric motor, some types of failures can occur, with stator winding failure being the most common. The impact of this failure must be considered from the incipient as it can affect the performance of the motor, especially for electrically powered vehicle application. In this paper, the intern turn short circuit of the stator winding was studied using Fast Fourier transform (FFT) and Shor-Time Fourier transform (STFT) approaches. The residuals current between the estimated currents provided by the extended Kalman filter (EKF) and the actual ones are used for fault diagnosis and identification. Through FFT, the residual spectrum is sensitive to faults and gives the extraction of inter-turn short circuit (ITSC) related frequencies in the phase winding. In addition, the FFT is used to obtain information about when and where the ITSC appears in the phase winding. Indeed, the results allow to know the faulty phase, to estimate the fault rate and the fault occurrence frequency as well as their appearance time.

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“…As the initial stages of failures may not have a direct effect on operation of the machine their detection is difficult [5][6][7]. However, they may spread in the interior of the machine and in consequence may lead to a stoppage of a technological process in a factory [2,[8][9][10]. Therefore, the diagnostics of electric motors and the detection of failures at their early stage plays an important role in industrial applications [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…The review of the literature shows that the most often appearing failures of induction motors is due to damages in a stator circuit [9,11,13,14]. The most common failures in the stator's circuit concerns inter-turn short-circuits that account for over 30% of all failures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Torque Ripples of an Induction Motor Taking into Account a Inter-Turn Short-Circuit in a Stator Winding

Pietrowski

Górny

2020

Energies

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Despite the increasing popularity of permanent magnet synchronous machines, induction motors (IM) are still the most frequently used electrical machines in commercial applications. Ensuring a failure-free operation of IM motivates research aimed at the development of effective methods of monitoring and diagnostic of electrical machines. The presented paper deals with diagnostics of an IM with failure of an inter-turn short-circuit in a stator winding. As this type of failure commonly does not lead immediately to exclusion of a drive system, an early stage diagnosis of inter-turn short-circuit enables preventive maintenance and reduce the costs of a whole drive system failure. In the proposed approach, the early diagnostics of IM with the inter-turn short-circuit is based on the analysis of an electromagnetic torque waveform. The research is based on an elaborated numerical field–circuit model of IM. In the presented model, the inter-turn short-circuit in the selected winding has been accounted for. As the short-circuit between the turns can occur in different locations in coils of winding, computations were carried out for various quantity of shorted turns in the winding. The performed analysis of impact of inter-turn short-circuit on torque waveforms allowed to find the correlation between the quantity of shorted turns and torque ripple level. This correlation can be used as input into the first layer of an artificial neural network in early and noninvasive diagnostics of drive systems.

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Detection of inter-turn short-circuit at start-up of induction machine based on torque analysis

Cited by 8 publications

References 19 publications

Imitation Modeling of an Inter-Turn Short Circuit of an Asynchronous Motor Stator Winding for Diagnostics of Auxiliary Electric Drives of Transport Infrastructure

Imitation Modeling of an Inter-Turn Short Circuit of an Asynchronous Motor Stator Winding for Diagnostics of Auxiliary Electric Drives of Transport Infrastructure

Diagnosis of ITSC fault in the electrical vehicle powertrain system through signal processing analysis

Analysis of Torque Ripples of an Induction Motor Taking into Account a Inter-Turn Short-Circuit in a Stator Winding

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