Some Results of a Study of Wave Energy Converters at Sevastopol State University

Cheboxarov, Victor V.; Yakimovich, B. A.; Lyamina, Natalya; Ali, L. M. Abd; Zhiganov, I. G.

doi:10.3103/s0003701x19040029

Cited by 11 publications

(7 citation statements)

References 2 publications

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“…Partial shading of the group of photovoltaic panels having a group of partially shaded photovoltaic panels (as at the 2 nd stage of the experiment) with evenly lit arrays and Intelligent Maximum Power selecting and PV arrays harmonizing Device installed 5. Partial shading of a group of photovoltaic panels (as at the 2 nd stage of the experiment) with individual matching converters installed on each shaded panel when connected in parallel with evenly lit arrays [10][11][12]. During the experiment, RSPPS-3-19 and RZV-31B rheostats were used as a load, in series with which an ammeter was turned on (APPA 503 multimeter, included in the SI State Register under number 49266-12 until 02.17.22, with an error of DC measurements: (0.2% + 40 count units) in the range from 40 mA to 10A).…”

Section: Conditions Materials and Methodsmentioning

confidence: 99%

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Kuznetsov¹,

Abd²,

Кувшинов³

et al. 2020

J Appl Eng Science

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The article deals with research in solar power plants and Renewable Energy Laboratory. The purpose of research was to study the infl uencing of partial shading on the energy effi ciency of photovoltaic installations in various connection options. As the title implies the article describes a study of the possibilities of increasing their energy effi ciency when operating under different conditions. It is spoken in detail about replacement of "block connection" panels to the "in-line connection", in case of partial shading by the previous string. It is shown that substitution allows to obtain a signifi cantly higher power-up to 8 times. It is examined that the horizontal arrangement of the panels instead of the vertical, under the same conditions, also allows up to 5 times the power of the partially shaded array in the case "in-line connection" and by 34% in the case of a "block connection". It is analyzed that parallel connection of partially shaded photovoltaic array with normally illuminated, requires voltage matching, for the selection of electrical energy at the point of maximum power, which makes it possible to obtain much more energy from the shaded array. It is experimentally shown that when using the "Intelligent maximum power selection device" that implements the voltage matching, it is possible to increase the array power up to 4 times with partial shading of 3 panels of 18. It should be noted that the choice of methods that allow receiving energy from shaded panels through individual matching converters does not permit signifi cantly increasing the energy production of partially shaded array. It is experimentally shown that as a result of their use the array power does not increase by more than 2.5%. The results of research can be used in the design of new installations based on photovoltaic cells and the modernization of existing ones.

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Section: Conditions Materials and Methodsmentioning

confidence: 99%

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Kuznetsov¹,

Abd²,

Кувшинов³

et al. 2020

J Appl Eng Science

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“…A photovoltaic system, commonly referred to as a PV system or a solar power system, is a type of power system that harnesses solar energy using photovoltaics. A solar inverter transforms direct current to alternating current, solar panels collect and convert sunlight into energy, mounting, cabling, and other electrical components are all included in its construction [14], [15]. As storage device prices are anticipated to decline, it may also provide an integrated battery solution and make use of a solar tracking system to improve the system's overall efficiency.…”

Section: Photovoltaics Systemmentioning

confidence: 99%

Energy generation by crystalline silicon photovoltaic network per meter square in Iraq

Ali

Abdala²,

Al-khaykan³

et al. 2023

IJECE

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<span lang="EN-US">Iraqi people have been without energy for nearly two decades, even though their geographic position provides a high intensity of radiation appropriate for the construction of solar plants capable of producing significant quantities of electricity. Also, the annual sunny hours in Iraq are between 3,600 to 4,300 hours which makes it perfect to use the photovoltaics arrays to generate electricity with very high efficiency compared to many countries, especially in Europe. This paper shows the amount of electric energy generated by the meter square of crystalline silicon in the photovoltaic (PV) array that already installed in 18 states in Iraq for each month of the year. The results of the meter-square of PV array in three tracking positions are presented in this paper. This paper shows that the average electricity generated in North cities (Dohuk, Al-Sulaymaniyah, and Erbil) are less than the southern cities in the winter season (three positions) by about 40-50%. Iraq has a stable PV electrical generation during all the year in all regions except the North cities while the highest cities in electricity generation are (Najaf and Al-Anbar).</span>

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“…Moreover, these installations come in completely different designs and use both passive and active conversion of the solar radiation flux in their work. Such systems make it possible to use almost the entire solar spectrum of wavelengths [9][10][11]. These power plants can be used in conjunction with other equipment and are highly efficient cogeneration systems for generating heat and electricity, designed to provide an autonomous or system consumer [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Use of combined solar energy supply systems integrated in the structure of buildings

Issa,

Kuvshinov,

Guseva

2023

E3S Web Conf.

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At present, installations based on alternative renewable types of energy are being introduced into energy complexes at an accelerated pace around the world. These energy systems do not use fossil fuels and do not produce harmful emissions. However, the low energy potential of such installations, calculated per unit of working surface (for example, for solar installations), and the variability of operation (due to climatic conditions), do not allow them to be fully used. As a result, the replacement of traditional energy with renewable energy is moving at a very slow pace. The present paper proposes the use on a significant scale of large solar power systems designed for a communal or individual consumer in order to provide it with thermal and electrical energy. At the same time, it is supposed to receive both electrical and thermal energy from the same working surface. So, the total coefficient of direct conversion of the solar radiation flux by the thermophotovoltaic systems shown here goes up a lot. In addition, to increase efficiency and save building materials, it is proposed to install such systems instead of building roofs. That is, the proposed solar converters can be integrated into the building structures. The use of such energy systems in traditional buildings makes it possible to obtain thermal and electrical energy from the flow of solar radiation without using additional space and significantly reduces the consumption of traditional energy resources.

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Some Results of a Study of Wave Energy Converters at Sevastopol State University

Cited by 11 publications

References 2 publications

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Investigation of the losses of photovoltaic solar systems during operation under partial shading

Energy generation by crystalline silicon photovoltaic network per meter square in Iraq

Use of combined solar energy supply systems integrated in the structure of buildings

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