Revealing the Impact of Electromechanical Complex Mechanical Vibrations on Electrical Instantaneous Power

Nozhenko, Viktoriia; Bialobrzheskyi, Olexii; Rodkin, Dmytro

doi:10.1109/khpiweek53812.2021.9570031

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Complex interrelated objects of research are often difficult to describe mathematically, so to do this, various principles and methods of identification are used [ 28 , 29 , 30 ]. Taking into account the implementation of the principles of Industry 4.0, the remote control of any technological process must be organized taking into account the requirements for cybersecurity and data exchange security [ 31 , 32 , 33 ]. The generalized models of one-, two-, and three-mass vibrating machines with rectilinear progressive movement of the platforms and a vibration exciter in the form of a ball, roller, or pendulum autobalancer were built.…”

Section: Introductionmentioning

confidence: 99%

“…In the generalized model of a single-mass vibrating machine, the platform rests on an elastic–viscous resistance with guides that provide rectilinear translational movement of the platform [ 31 ]. Reference [ 32 ] proposes a study of the instantaneous electric power of the engine for the evaluation of the mechanical vibrations of the electromechanical complex. With the help of mathematical modeling, a study of the effect of mechanical vibrations of the gearbox on the instantaneous electric power of an asynchronous drive motor was carried out.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adjustable Vibration Exciter Based on Unbalanced Motors

Osadchyy

Nazarova

Hutsol

et al. 2023

Sensors

View full text Add to dashboard Cite

In European industry, such as metallurgical, mining and processing, construction, food, and chemical, vibration exciters are used, which indicates their wide and, in some cases, unique technological capabilities. The most common are electromagnetic and unbalanced vibration exciters. The advantages of electromagnetic vibration exciters include the ability to control the amplitude of the vibration by changing the electrical power supplied; the disadvantages are high material consumption. However, unbalanced vibration exciters have low energy efficiency, which is associated with difficult start-up conditions and with an overestimated mechanical power of the vibration exciter in relation to the power required by the technology itself, which is due to the need to minimize the effect of the technological load on the operating mode of the vibrating unit. Adjusting the amplitude of the disturbing force of unbalanced vibration exciters, regardless of the vibration frequency, will make it possible to reduce the installed power of the unit by passing the resonant frequency with a minimum disturbing force and compensating for the effect of the process load by means of a closed-loop electric drive. In the course of the study, an analytical description of the interaction of the rotating unbalances located on a common movable platform was obtained. On the basis of these analytical dependencies, a mathematical model was developed that takes into account the dynamic characteristics of a frequency-controlled asynchronous electric drive of a closed-loop control system for the mutual arrangement of rotating unbalances. The simulation results confirmed the possibility of using the specified electric drive to control the oscillation amplitude directly in the process of operation of a four-unbalanced vibration exciter. A physical experiment was carried out to determine the transient processes of changing the angular velocity of an induction motor with an abrupt change in the frequency converter setting. On the basis of this experiment, the previously created mathematical model was refined in terms of describing the dynamic parameters of the electric drive. The proposed structure of the control system, the performance of which has been confirmed by mathematical modeling, makes it possible to implement an adjustable four-unbalanced vibration exciter using single commercially available asynchronous vibrators.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adjustable Vibration Exciter Based on Unbalanced Motors

Osadchyy

Nazarova

Hutsol

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

dComFra DC-office as a Capacity Building Tool for Electrical Engineering and Information Technologies Institute

Zagirnyak,

Gladyr,

Mamchur

et al. 2023

2023 IEEE 5th International Conference on Modern Electrical and Energy System (MEES)

View full text Add to dashboard Cite

Influence of misalignment of connection of electrical machine shafts on the nature of electric power of the induction motor

Bialobrzheskyi¹,

Nozhenko²,

Todorov³

2022

Nauk. visn. nat. hirn. univ.

View full text Add to dashboard Cite

Purpose. To identify the vibration power components caused by misalignment of electrical machine shafts in the instantaneous power of the induction motor. Methodology. The power components of the induction motor are analytically determined taking into account the power caused by torque vibrations on the shaft. Based on this, using the methods of mathematical modelling in the visual programming environment, the known model of a three-phase induction motor with a short-circuited rotor has been made. In addition, elements and connections are introduced which realize the formation of the moment caused by the imbalance of rotating masses. Using Fourier transform of the electric power of the induction motor, we determine its discrete spectrum. Experimental research is conducted on the electric power of the induction motor with a short-circuited rotor, in similar model conditions, on laboratory equipment. With the use of a virtual device synthesized in the LabVIEW package, the wavelet analysis of stator electric power of the motor of laboratory electrotechnical complex is performed. Findings. Differential equations of the induction motor with a short-circuited rotor in abc coordinate system are obtained, which reflect the distribution of instantaneous power in the machine taking into account the vibration moment. As a result of modelling according to the specified equations of the induction machine, in the conditions of full symmetry of parameters of the scheme and the mode with eccentricity of rotating masses, low-frequency vibrations of electric power of a stator with frequency of 25 Hz have been found. Similar results were obtained as a result of wavelet analysis of the electric power of an induction motor of a laboratory electrotechnical complex. Originality. Rationality of use of instantaneous electrical power of induction motor stator for detection of vibration caused by misalignment between its shaft and the shaft of another machine has been substantiated, which allows detecting vibration without complex methods of measuring vibration displacement and its derivatives. Practical value. Detecting vibration by measuring the electrical parameters of the stator circuit of the induction motor and determining the vibrations of its instantaneous power without the use of specialized equipment significantly simplify the procedure of vibration diagnostics at its early stages.

show abstract

Revealing the Impact of Electromechanical Complex Mechanical Vibrations on Electrical Instantaneous Power

Cited by 3 publications

References 4 publications

Adjustable Vibration Exciter Based on Unbalanced Motors

Adjustable Vibration Exciter Based on Unbalanced Motors

dComFra DC-office as a Capacity Building Tool for Electrical Engineering and Information Technologies Institute

Influence of misalignment of connection of electrical machine shafts on the nature of electric power of the induction motor

Contact Info

Product

Resources

About