Wyniki wyszukiwania - BazTech

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Synthesis of the structural diagram with algorithms of the units of the on-board diagnostic system of induction motors of vehicles

Gubarevych Oleg, Melkonova Inna, Melkonov Hryhorii, Melnyk Olha, Miroshnykova Mariia

Diagnostyka

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2024

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Vol. 25, No. 1

art. no. 2024109

EN

In this comprehensive study, the concept and structural diagram of the system for diagnostics of induction electric motors of vehicles with the development of algorithms for the operation of modular units for monitoring the state of the main structural elements are proposed. During the development of the diagnostic system, the peculiarities of the construction of diagnostic systems of rotating electric machines were investigated in the real conditions of their operation, and modern methods of current and vibration diagnostics were implemented. The work algorithms of each module are presented in the functional diagram of the general diagnostic system of and cover important defects of induction motors. The diagnostic system combines methods that use different diagnostic principles and criteria and are adapted for use in an embedded diagnostic system. The developed functional diagram of the diagnostic system can be used for practical implementation in physical form. The use of the proposed diagnostic system will make it possible to obtain continuous information about the state of both electrical and mechanical components of the induction motor when operating under load with a poor-quality power system in real operating conditions.

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Comparison of the results of simulation modeling of an asynchronous electric motor with the calculated electrodynamic and energy characteristics

Gubarevych Oleg, Golubieva Svitlana, Melkonova Inna

Przegląd Elektrotechniczny

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2022

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R. 98, nr 10

61--66

EN

The paper presents the results of a comparison of the electrodynamic and energy characteristics and parameters of an asynchronous motor, obtained by simulation and calculated by the classical method. The mathematical model in the MATLab software environment is used for research. The research results are relevant when choosing and using the proposed simulation model of three-phase squirrel-cage asynchronous motors for further research, including the effect of various engine defects on its performance.

XX

W artykule przedstawiono wyniki porównania charakterystyk i parametrów elektrodynamicznych i energetycznych silnika asynchronicznego, uzyskanych metodą symulacji i obliczonych metodą klasyczną. Do badań wykorzystano model matematyczny wykonany w środowisku oprogramowania MATLab. Wyniki prac mają istotne znaczenie dla wyboru i wykorzystania zaproponowanego modelu symulacyjnego asynchronicznego silnika elektrycznego z wirnikiem klatkowym do dalszych badań, w tym wpływu różnego rodzaju uszkodzeń silnika na jego pracę.

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

Gubarevych Oleg, Goolak Sergey, Melkonova Inna, Yurchenko Mariia

Diagnostyka

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2022

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Vol. 23, No. 4

art. no. 2022406

EN

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 machines – a 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 damage - inter-turn short circuit in the stator winding.

4

Research of the Force Function Distribution in the Workplace of the Magnetic Disc Type Separator Intended for the Cleaning of Bulk Substances from the Ferromagnetic Impurities

Shvedchykova Iryna, Melkonova Inna

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

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2019

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Vol. 8, No 3

3--10

EN

The paper deals with the magnetic system of the disk separator with permanent magnets. It is shown that the developed magnetic system can be used to purify finely dispersed friable substances from unwanted ferromagnetic inclusions. The main advantage of the magnetic system is the ability to self-clean the surface of a non-magnetic rotating discharging disk. The research of the distribution of the force function acting on multi-domain ferromagnetic particles in the working zone of the disk separator was carried out. To solve the main tasks of the study, a finite element method was implemented, realized in the COMSOL Multiphysics software environment. It is shown that when changing the air gap or the effective length of the poles, the distribution of the force function over the height of the working zone, as well as the magnitude of force, varies. The rational size of the air interpolar gap, which provides the maximum value of power force, was determined.