Implementation and Analysis of Rolling Bearing Faults Caused by Shaft Currents

Kudelina, Karolina; Autsou, Siarhei; Asad, Bilal; Rassõlkin, Anton; Kallaste, Ants

doi:10.1109/iwed54598.2022.9722596

Cited by 3 publications

(2 citation statements)

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“…The main technical characteristics of servomotors are as follows [18,[52][53][54][55][56][57]: Motors with the function of maintaining a constant rotational speed are also used in laboratory setups of a digital twin of a wind generator [49], as well as in diagnosing damage to bearings [50,51] depicted in Figure 3a,b. Motor control is carried out using a frequency converter, allowing the selection of an appropriate motor control mode, adjustment of controller settings for different operating conditions, calibration of control to eliminate malfunctions, and more.…”

Section: Servomotor Characteristicsmentioning

confidence: 99%

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Autsou,

Kudelina,

Vaimann

et al. 2024

Applied Sciences

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Servomotors have found widespread application in many areas, such as manufacturing, robotics, automation, and others. Thus, the control of servomotors is divided into various principles and methods, leading to a high diversity of control systems. This article provides an overview of types of servomotors and their basic principles and control methods. Principles such as digital signal processing, feedback control principle, field-oriented control, and integration with Industry 4.0 are discussed. Based on these control principles, the article presents popular control methods: PWM control, current control, two-loop control, fuzzy-logic control, and programmable control. The article concludes with a comparison of the presented methods on several criteria, and as an example, it includes the results of modeling a servomotor using the fuzzy-logic control method.

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Section: Servomotor Characteristicsmentioning

confidence: 99%

Principles and Methods of Servomotor Control: Comparative Analysis and Applications

Autsou,

Kudelina,

Vaimann

et al. 2024

Applied Sciences

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“…Dust and liquid contamination entering the seal cause bearing failures [175]. Most diagnostic methods for machine electrical and mechanical failures use MCSA [43,176,177]. Bearing faults can have the following causes:…”

Section: Bearing Faultsmentioning

confidence: 99%

Inverter-Fed Motor Drive System: A Systematic Analysis of Condition Monitoring and Practical Diagnostic Techniques

et al. 2023

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Due to their efficiency and control capabilities, induction motors fed with inverters have become prevalent in various industrial applications. However, ensuring the reliable operation of the motor and diagnosing faults on time are crucial for preventing unexpected failures and minimizing downtime. This paper systematically analyzes condition monitoring and practical diagnostic techniques for inverter-fed motor drive systems. This study encompasses a thorough evaluation of different methods used for condition monitoring and diagnostics of induction motors, with the most crucial faults in their stator, rotor, bearings, eccentricity, shaft currents, and partial discharges. It also includes an assessment of their applicability. The presented analysis includes a focus on the challenges associated with inverter-fed systems, such as high-frequency harmonics, common-mode voltages causing the bearing currents, and high voltage gradients (dv/dt) due to fast switching frequency, which can impact the motor operation, as well as its faults analysis. Furthermore, this research explores the usefulness and efficiency of various available diagnostic methods, such as motor current signature analysis and other useful analyses using advanced signal processing techniques. This study aims to present findings that provide valuable insights for developing comprehensive condition monitoring strategies, and practical diagnostic techniques that enable proactive maintenance, enhanced system performance, and improved operational reliability of inverter-fed motor drive systems.

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