Vibration diagnostics of induction motors

Сафиуллин, Р. А.

doi:10.1109/icoecs52783.2021.9657352

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…Damage to the bearings (12%) leads to the appearance of vibration and, over time, to the engagement of the rotor in the stator, resulting in damage to the rotor and stator with the closure of the active steel sheets of the magnetic circuit of these elements, which completely removes the electric motor from the working state [12][13][14]. Monitoring the condition of the bearings contributes to the timely detection of damage to the bearings and the prevention of an emergency stop of the electric motor.…”

Section: Development Of the Structural Diagram Of The Diagnostics Sys...mentioning

confidence: 99%

“…When using vibration diagnostic methods, the presence and degree of damage in an inductions motor are determined by methods of spectral analysis of vibration signals [13,14]. Spectra of vibration signals can be used to determine with sufficient accuracy the type and nature of damage, which requires the presence of special sensors.…”

Section: Development Of the Structural Diagram Of The Module For Moni...mentioning

confidence: 99%

“…In formula (14), φsnom is the value of the phase shift angle of the stator currents with intact stator windings.…”

Section: Algorithm For Determining the Presence Of Inter-turn Short C...mentioning

confidence: 99%

“…The obtained value of the angle of ellipticity less than π/4 will indicate the presence of an inter-turn short circuit in the stator windings. In the presence of an inter-turn short circuit, the amplitudes and phases of the stator phase currents are calculated using expressions (15)(16), and the number of damaged turns of the winding stator is calculated using expressions (13)(14).…”

Section: Development Of a Block Diagram Of The Module For Monitoring ...mentioning

confidence: 99%

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Structural diagram of the built-in diagnostic system for electric drives of vehicles

Gubarevych¹,

Goolak²,

Melkonova³

et al. 2022

Diagnostyka

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Currently, in transport systems, as part of the main and auxiliary equipment, a large number of induction motors with a squirrel-cage rotor of different capacities are used. Their wide application in the transport industry is associated with the main advantages over other types of machinesa fairly high reliability, low cost and ease of maintenance. However, during the operation of these motors, a number of malfunctions can occur that affect the deterioration of the performance of the entire drive, the accuracy of its functions, or accelerate an emergency stop. To ensure proper control of the technical condition of electric motors, modern diagnostic systems are required that operate in real-time and operational loading mode with the transmission of data on the instantaneous state of the main control elements. The paper proposes a block diagram of the diagnostic built-in system and developed a modular unit for it to set the type and degree of the most complex damageinter-turn short circuit in the stator winding.

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Section: Development Of the Structural Diagram Of The Diagnostics Sys...mentioning

confidence: 99%

Section: Development Of the Structural Diagram Of The Module For Moni...mentioning

confidence: 99%

“…In formula (14), φsnom is the value of the phase shift angle of the stator currents with intact stator windings.…”

Section: Algorithm For Determining the Presence Of Inter-turn Short C...mentioning

confidence: 99%

Section: Development Of a Block Diagram Of The Module For Monitoring ...mentioning

confidence: 99%

See 2 more Smart Citations

Structural diagram of the built-in diagnostic system for electric drives of vehicles

Gubarevych¹,

Goolak²,

Melkonova³

et al. 2022

Diagnostyka

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show abstract

“…In recent years, vibration diagnostics, which is one of the main methods of non-destructive testing, is considered the most common and effective method for determining the technical condition of electric motor elements [7,8]. Using this method, it is possible to control equipment, diagnose malfunctions, predict the further development of equipment malfunctions and the period of uptime.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the features of application of vibration diagnostic methods of induction motors of transportation infrastructure using mathematical modeling

Gubarevych¹,

Gerlici²,

Gorobchenko³

et al. 2023

Diagnostyka

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In the work, studies were carried out on the use of vibration diagnostic methods for monitoring the state of induction motors with a squirrel-cage rotor, operated in electric drives of transport equipment. The most common and difficult-todiagnose damage to an induction motor is turn-to-turn short circuits in the stator winding, which require timely determination and establishment of the degree of damage to prevent an emergency shutdown of the equipment. The main purpose of the study is to establish the most effective areas of application of vibration diagnostic methods in determining the technical condition of the stator of induction motors under load. The experiments were carried out using simulation modeling for cases of turn-to-turn short circuits in one and two phases simultaneously, as well as with the influence of a low-quality supply voltage system on vibration parameters. The results of the work are relevant for further improvement of systems for diagnostic control of drives of transport equipment to increase the efficiency and reliability of their work.

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Research on and Assessment of the Reliability of Railway Transport Systems with Induction Motors

Gubarevych,

Duer,

Melkonova

et al. 2023

Energies

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Increasing the efficiency and reliability of modern railway transport is accompanied by an increase in monitoring and diagnostic systems for the current state of electric drives. Modern railway transport contains a large number of induction motors to ensure the operation of the drives of various mechanisms. In the article, based on the operational statistics of engine failures and the proposed scheme for diagnosing them, studies were carried out and a model was developed for assessing the reliability of a transport system equipped with an on-board diagnostic system for the current state. When building the models, the Markov method was used, including the construction of graphs for the five most relevant states of the induction electric motor during operation. The results obtained are relevant for evaluating the effectiveness of using the built-in diagnostic system and scheduling routine maintenance, which will affect the efficiency of railway transport. Based on the process of the diagnosis of railway transport systems with induction motors, five operating states of the object studied were interpreted: the state of full operation, state “S0”; the state of incomplete serviceability, state “S1”; critical serviceability, state “S2”; the state of the pre-damage condition, state “S3”; the state of unserviceability (defect), state “S4”. Subsequently, a five-state model of the operation process of railway transport systems with induction motors was developed. This model is also described by equations of state: Kolmogorov–Chapman equations. The reliability quantities determined form the basis for simulation reliability studies. The effect of the simulation study is the reliability quantities determined in the form of reliability functions and probabilities of the occurrences of the operating states of railway transport systems with induction motors; an important part of the reliability study of the system examined is to estimate the times of the occurrences in the object studied of the operating states in the future.

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Vibration diagnostics of induction motors

Cited by 3 publications

References 4 publications

Structural diagram of the built-in diagnostic system for electric drives of vehicles

Structural diagram of the built-in diagnostic system for electric drives of vehicles

Analysis of the features of application of vibration diagnostic methods of induction motors of transportation infrastructure using mathematical modeling

Research on and Assessment of the Reliability of Railway Transport Systems with Induction Motors

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