The Numerical Analysis of Electromechanical Characteristics of Twin-Screw Electromechanical Hydrolyzer

Zablodsky, Nikolay; Chuenko, Roman; Gritsyuk, Volodymyr; Kovalchuk, Stanislav; Romanenko, Oleksii

doi:10.1109/acit52158.2021.9548392

Cited by 5 publications

(7 citation statements)

References 17 publications

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“…The screw electromechanical hydrolyser is a simplified implementation of the twin-screw electromechanical hydrolyser presented by (Zablodskiy et al, 2021a;Zablodsky et al, 2021b). The screw electromechanical hydrolyser consists of a feedstock loading unit, a screw, a deaerator for air removal, an outer shell of the working medium, a heating and magnetic field effect unit, a feedstock unloading unit, a metal profile structure, an electric drive, and a vacuum pump.…”

Section: Methodsmentioning

confidence: 99%

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Untitled

2023

Tehnìka ta energetika

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The lack of simple analytical physical and mathematical models complicates the investigation of the interaction of tillage working bodies with the soil when designing new structures. To simplify these calculations within the framework of agricultural machinery engineering, it is necessary to use software that integrates the development of agricultural mechanics. The purpose of this study was to model and investigate the interaction of tillage working bodies with the soil using Simcenter STAR-CCM+. For this, the volumetric fluid method and the discrete element method were used. When creating the model, the main physical and mechanical properties of the soil were used. As a result, the simulation of the interaction of the most common tillage working bodies, such as a tooth of a duck-foot cultivator, a disc harrow on an elastic stand, a subsoil cultivator (chisel plough), a mouldboard plough, and a smooth roller, was modelled using volumeof-fluid method and discrete element method. The application of the volume-of-fluid method helped establish a nonprimary flow of the soil relative to the working body, while the discrete element method determined the distributions of velocities and forces of interaction of soil particles. It was found that both proposed methods can be useful for modelling the interaction of the tillage working body with the soil in Simcenter STAR-CCM+. Complementing each other, they create a general picture of the physics of the interaction of the tillage tool with the soil. Using Simcenter STAR-CCM+, the interaction process was visualized and the height of the formed ridges and furrow depths and their location in space were

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Section: Methodsmentioning

confidence: 99%

“…Magnetic isolation as a separate type of magnetic potential boundary condition equates the tangential component of the magnetic potential to zero (Zablodsky et al, 2021b):…”

Section: N Zablodskiy Et Almentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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“…The magnetic field created on the outer surface of the rotor must be rotating. Therefore, this effect can be considered as a kind of electromagnetic stirrer (Zablodskiy et al, 2021). In the case of using such a field, for example, in liquid media, eddy currents arise that create their magnetic field and interact with the rotating stator field, which contributes to more intense heat and mass transfer in the liquid (Smith, 2015).…”

Section: 𝜆𝜆𝜆𝜆δ𝑇𝑇𝑇𝑇 − 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐mentioning

confidence: 99%

“…All types of energy dissipation in such machines are used to process raw materials. For example, in screw electromechanical converters (SEMCs), an external massive rotor can contact the processing medium and create multiphysical processes for processing raw materials (Zablodskiy et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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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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“…Therefore, the methods of reducing eddy current losses for machines with a solid rotor considered above are associated with the occurrence of current imbalance and additional complications of power electronics devices. But for SEMCs, taking into account the scope of their functional tasks [9,19], the problem of reducing eddy current losses in the rotor is not critical, with the exception of effective control of the power factor.…”

Section: Introductionmentioning

confidence: 99%

Internal capacitive compensation of the reactive power of the screw electromechanical converter

Zablodskiy,

Chuenko,

Kovalchuk

et al. 2024

Electrical Engineering & Electromechanics

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Introduction. A special category among induction machines with a massive rotor is occupied by the class of multifunctional electromechanical energy converters, which are integrated with the links of technological processes Problem. The exchange of reactive energy between the source and the electromechanical converter during periods of operation with a low load leads to a significant decrease in its efficiency and power factor. With the use of non-linear loads and taking into account possible resonance, it has become more difficult to improve the power factor by installing capacitor banks. Goal. Increasing the energy indicators of the electromechanical converter by spatial displacement of the main and additional stator windings and internal capacitive compensation. Methodology. Comparative analysis of connection schemes and spatial arrangement of stator windings when using internal capacitive compensation. Modeling and experimental studies of electromagnetic and electromechanical characteristics of a screw electromechanical converter. Results. The distribution of electromagnetic quantities was established and the choice of the angle of spatial displacement of the main and additional windings of the stator phases of the modified converter, which ensure an increase in the value of the electromagnetic torque and power factor, was justified. The results of experimental studies of the screw electromechanical converter are presented. Originality. For the first time, a method of internal capacitive compensation of reactive power is proposed for multifunctional electromechanical converters of technological purpose. Practical value. The use of the proposed method of spatial displacement of the main and additional stator windings and internal capacitive compensation will ensure an increase in the energy performance of the screw electromechanical converter. References 23, tables 3, figures 15.

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The Numerical Analysis of Electromechanical Characteristics of Twin-Screw Electromechanical Hydrolyzer

Cited by 5 publications

References 17 publications

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Internal capacitive compensation of the reactive power of the screw electromechanical converter

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