Structure of Magnetic Field of the Axial Arc-Stator Induction Motor With Solid Bimetallic Disc Rotor

Rashchepkin, A. P.; Karlov, О.M.; Kryshchuk, R.S.

doi:10.15407/publishing2017.47.028

Cited by 3 publications

(3 citation statements)

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“…Unlike the method used by A.P. Rashchepkin et al (2017), the modularity of the rotor design and the combination of the rotor with the working body were considered.…”

Section: 𝜆𝜆𝜆𝜆δ𝑇𝑇𝑇𝑇 − 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐mentioning

confidence: 99%

“…The method proposed by M. Jagiela et al (2012), which is based on the numerical determination of the dimensionless rotor end coefficient using a combination of three-dimensional and two-dimensional finite element models, was developed for high-speed induction motors with a solid rotor and does not consider the operation of an electromagnetic system with several stators and a common rotor. To form an analytical method for calculating the magnetic field and electromagnetic field energy distribution in the intermodule space of the SEMС, it may be advisable to use Maxwell's system of equations for the quasi-stationary regime and integral transformations into Fourier series along the azimuthal coordinate (Rashchepkin et al, 2017).…”

Section: 𝜆𝜆𝜆𝜆δ𝑇𝑇𝑇𝑇 − 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐mentioning

confidence: 99%

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Untitled

2023

Tehnìka ta energetika

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The research is devoted to the topical problem of the efficiency of turning wide-span bridge machines in the track farming system. The research aims to study the curvilinear movement along the soil traces of a constant technological track of an arbitrary multi-supported bridge machine, considering its design and method of turning, parameters, modes of movement and loading. Experimental studies were conducted, involving the use of a modern strain track and specially designed equipment for electrical measurements of non-electrical quantities. The processing of research data was carried out on a personal computer. A methodology for compiling private models of turning off the bridge vehicle moving along the soil trace of the constant technological track was developed. As a result of the joint solution problem of the bridge machine turning, it is possible to determine all output parameters of curvilinear motion: trajectory, tractive forces, turning radius, slipping, and actual speeds. The force interaction of the bridge machine's undercarriage with the soil trace of a constant track is presented based on flat sliding with a variable anisotropic friction coefficient of adhesion φ yd , depending on the properties of the track. As the radius of the wheel, the width of its tire and the air pressure in it, as well as the vertical load that acts on it, the coefficient of traction of the bridge machine φ yd increases, which may cause higher slippage. The adequacy of the model of stationary turning of the overhead machine is confirmed by experimental estimation of the

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“…Unlike the method used by A.P. Rashchepkin et al (2017), the modularity of the rotor design and the combination of the rotor with the working body were considered.…”

Section: 𝜆𝜆𝜆𝜆δ𝑇𝑇𝑇𝑇 − 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐mentioning

confidence: 99%

Section: 𝜆𝜆𝜆𝜆δ𝑇𝑇𝑇𝑇 − 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐mentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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“…Unlike the method used by A.P. Rashchepkin et al (2017), the modularity of the rotor design and the combination of the rotor with the working body were considered. The rotor of the SEMC performs the functions of an actuator and is used as a direct drive, in which a wide range of rotational speeds can be formed without a semiconductor converter.…”

Section: 𝜆𝜆𝜆𝜆δ𝑇𝑇𝑇𝑇 − 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐mentioning

confidence: 99%

The screw-type electrothermomechanical converter as a source of multiphysical influence on the technological environment

Junge,

Zablodskiy,

Zaiets

et al. 2023

Tehnìka ta energetika

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In ensuring the reliability of electromechanical converters in harsh conditions, the problem of increasing the energy efficiency of their application through structural, functional, and thermal integration with the technological environment is present. Thus, the research aims to determine the conditions of the direct multiphysical impact of a screw-type electromechanical converter on the technological environment. The method used is based on determining the list of features of screw-type electromechanical converters using the Comsol Multiphysics software, and a combination of three-dimensional and two-dimensional finite element models limited to the rotor with the inclusion of blades in the computational domain. Two variants of forming an algorithm for the multiphysical impact on the technological environment were studied: local concentration of the impact in certain areas of the rotor and uniform distribution along the rotor surface of temperature, pressure, magnetic induction, and electric field strength. The regularities of the distribution of magnetic induction on the outer surface of the ferromagnetic rotor at different azimuthal locations of the frontal parts of adjacent stators have been established. The distribution of the normal component of the magnetic flux density at the contact with the process medium in the form of rutile product or ilmenite concentrate is determined. The consumed electric energy is distributed in the stator tooth zone and the zone of electromagnetic field penetration into the rotor. Eddy currents are concentrated at the penetration depth from the rotor’s inner surface, with the penetration depth depending on the thermal state and sliding mode. The electric field intensity on the rotor’s outer surface reaches 0.8 V/m in the areas opposite the stator crowns and depends on the current activity of the phases at a given moment. Controlling the thermal and speed regime of the rotor can be used to create conditions for bioenergy stimulation on its surface in places of contact with the medium or to support the process of electrode heating of the technological medium. The adequacy of the mathematical models proposed for numerical modelling to the experimental data of the prototype of the screw electromechanical converter was confirmed, with deviations not exceeding 9.5%. The obtained results can be used to predict the optimal indicators of electromagnetic and heat transfer processes in screw electromechanical converters associated with the technological environment

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