Global Trends in Implementation of Renewable Energy Sources and Features of Their Implementation During the Recovery of Ukraine's Economy

Denysiuk, Serhii; Bielokha, Halyna; Cherneshchuk, І.; Lysyi, V.

doi:10.20535/1813-5420.4.2022.273360

Cited by 3 publications

(1 citation statement)

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“…S.P. Denisyuk et al (2022) highlight that implementing energy-efficient technologies can reduce energy costs and ensure a stable and reliable energy future. This can enhance economic efficiency, reduce dependence on exhaustible resources, and decrease the environmental impact of the energy sector.…”

Section: Discussionmentioning

confidence: 99%

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2023

machinery

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The relevance of developing analytical methods for studying the stability of root crop cleaners on tractors is determined by the need to improve the efficiency and quality of root crop head cleaning, as this affects the quality of the final product and its marketable properties. The research aims to increase the stability of the cleaner movement by constructing a mathematical model of its oscillatory motion in the longitudinal-vertical plane and its numerical solution to determine the influence of parameters in response to external disturbances. To achieve this goal, a new theory of the movement of a root crop head cleaner in the longitudinal-vertical plane, mounted behind a wheeled tractor, under the influence of the disturbing effect of irregularities in the longitudinal profile of the soil surface on the amplitude and phase frequency characteristics of its angular oscillations was developed. Using numerical calculations carried out on a personal computer, the conditions were found under which the stability of the cleaner's movement in the specified plane will increase when the stiffness coefficient of the pneumatic tyres of the doubler wheels is 315 kN•m -1 .• This result is achieved when the pressure in the pneumatic wheel tyres is 135 kPa. As for the damping characteristics of the doubler wheel tyres, which are determined by the coefficient μ, it was found that when it changes from 350 N•s•m -1 to 1350 N•s•m -1 , there is an invariance of the delay in the reaction of the cleaner to the disturbing effect when its frequencies change from 0 to 24 s -1 . It was also found that the influence of the geometric dimensions of the cleaner is insignificant in the range of frequencies of oscillations of the ordinates of the longitudinal profile of soil surface irregularities from 0 to 24 s -1 . This follows from the nature of changes in the obtained amplitude-frequency and phase-frequency characteristics. The methodology for constructing a mathematical model of the plane-parallel oscillatory motion of the cleaner can be used in similar analytical studies of other agricultural machines mounted on a wheeled aggregating tractor

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Section: Discussionmentioning

confidence: 99%

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2023

machinery

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Energy policy of Ukraine and EU: Transformation Under Martial Law

Trunina,

Pryakhina,

Bilyk

et al. 2023

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

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Optimisation of energy solutions: Alternative energy, reactive power compensation, and energy efficiency management

Bandura,

Romaniuk,

Komenda

et al. 2023

Tehnìka ta energetika

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The relevance of the problem under study is determined by the need to create a sustainable, efficient and environmentally safe energy complex. The growth of the world population, industrial development, and overall energy demand endanger the provision of society’s energy needs, making the need for research urgent at the present time. The purpose of the study is to examine optimal energy optimisation strategies, including alternative energy, compensation of reactive power, and energy efficiency management, to ensure the stable and efficient functioning of the energy complex. Among the methods used, analytical, classification, functional, statistical, and synthesis methods were applied. In investigating the optimisation of energy solutions, a thorough analysis of various aspects of alternative energy, reactive power compensation, and energy efficiency management was conducted. This analysis encompassed various aspects and parameters related to these areas, including technical, economic, and environmental indicators. As a result of the study, it was established that alternative energy has significant potential for ensuring sustainable development of the energy system. It can serve as a reliable source of energy that does not harm the environment and is not dependent on limited resources. In addition, reactive power compensation was recognised as an effective way to avoid energy losses in the system. This strategy helps to ensure more efficient energy use and reduce losses during transmission and distribution. Energy efficiency management also proved to be a key aspect in achieving energy supply sustainability. This allows optimising resource utilisation, reducing energy costs, and mitigating the negative impact on the environment. The practical value of the study lies in the development of innovative recommendations and strategies for energy optimisation, which will contribute to the creation of a stable, efficient, and environmentally safe energy complex and enhance its compliance with current and future challenges, making a considerable contribution to the development of science and the energy sector

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Global Trends in Implementation of Renewable Energy Sources and Features of Their Implementation During the Recovery of Ukraine's Economy

Cited by 3 publications

References 1 publication

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Energy policy of Ukraine and EU: Transformation Under Martial Law

Optimisation of energy solutions: Alternative energy, reactive power compensation, and energy efficiency management

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