Criteria for Assessing the Energy Efficiency of the Electrical Complex

The issues related to modeling a variable frequency drive are discussed in the article. The authors were faced with the task of determining the influence of the drive load on the parameters of its equivalent circuit. An unambiguous dependence of the drive load on the value of the current’s harmonic components is revealed. Namely, the smaller the load, the greater the value of the current’s higher harmonics. It has been established that disregarding drive loading can lead to a 19% error in modeling the frequency converter current consumption. It is shown that the results of the study can be extended to a wide range of drives in terms of power, since all calculations were performed in relative units.

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Improvement of the frequency converter’s equivalent circuit when calculating non-sinusoidal modes

Belsky

Dobush

Zamyatin

2020

J. Phys.: Conf. Ser.

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Improving the efficiency of the use of photovoltaic stations in the republic of Cuba

Iakovleva

Guerra

2021

J. Phys.: Conf. Ser.

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This article is devoted to the study of the reasons for the low efficiency of solar generators in the Republic of Cuba. The work provides one of the possible technical solutions to this problem. The introduction of new technological solutions requires an integrated approach that evaluates the possibility of applying more efficient technologies for capturing sunlight in specific climatic conditions of the country, as well as evaluating the economic benefits of a particular solution. Therefore, this article discusses the existing problem of low efficiency of solar power plants, due to the absence of any tracking systems for the sun. The paper presents ways to solve this problem. Also, the paper presents a model of a photovoltaic solar system generator developed in the Matlab Simulink software, which makes it possible to study the main electrical variables of the complex. The experience gained in the course of the study presented in this paper can be applied in similar studies in Russia.

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Estimation of Electricity Generation by an Electro-Technical Complex with Photoelectric Panels Using Statistical Methods

Turysheva

Voytyuk

Guerra³

2021

Symmetry

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This paper presents a computational tool for estimating energy generated by low-power photovoltaic systems based on the specific conditions of the study region since the characteristic energy equation can be obtained considering the main climatological factors affecting these systems in terms of the symmetry or skewness of the random distribution of the generated energy. Furthermore, this paper is aimed at determining any correlation that exists between meteorological variables with respect to the energy generated by 5-kW solar systems in the specific climatic conditions of the Republic of Cuba. The paper also presents the results of the influence of each climate factor on the distribution symmetry of the generated energy of the solar system. Studying symmetry in statistical models is important because they allow us to establish the degree of symmetry (or skewness), which is the probability distribution of a random variable, without having to make a graphical representation of it. Statistical skewness reports the degree to which observations are distributed evenly and proportionally above and below the center (highest) point of the distribution. In the case when the mentioned distribution is balanced, it is called symmetric.

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Criteria for Assessing the Energy Efficiency of the Electrical Complex

Cited by 3 publications

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Improvement of the frequency converter’s equivalent circuit when calculating non-sinusoidal modes

Improvement of the frequency converter’s equivalent circuit when calculating non-sinusoidal modes

Improving the efficiency of the use of photovoltaic stations in the republic of Cuba

Estimation of Electricity Generation by an Electro-Technical Complex with Photoelectric Panels Using Statistical Methods

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