III–V Solar Cells and Concentrator Arrays

Alfërov, Zh. I.; Andreev, V. M.; Shvarts, М. Z.

doi:10.1007/978-3-030-22864-4_8

Cited by 8 publications

(3 citation statements)

References 65 publications

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“…Разработанные наземные солнечные батареи и энергоустановки нового поколения с концентраторами солнечного излучения [1][2][3][4][5][6][7][8][9] открывают перспективы существенного снижения стоимости получаемой электроэнергии за счет снижения площади солнечных элементов пропорционально кратности концентрирования солнечного излучения и увеличения удельной (с единицы площади) мощности батарей. Прецизионное отслеживание положения Солнца и улучшенная температурная стабильность КПД приводит к дополнительному увеличению на 30-40 % количества электроэнергии, вырабатываемой концентраторными солнечными фотоэнергоустановками, по сравнению с традиционными батареями без систем слежения.…”

Section: наземные концентраторные солнечные фотоэнергосистемы на основе каскадных солнечных элементовunclassified

Multijunction solar arrays for space and terrestrial applications

Андреев

2020

Vestn. Ross. univ. družby nar., Ser. Inž. issled.

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Photovoltaic conversion of the solar energy is the most prospective direction of the renewable power engineering. Solar arrays ensure power supply of spacecrafts and are gaining increasingly more application on the Earth. In the majority of developed countries, laws on state support of the green power engineering assisted in a substantial increase of power of the solar photovoltaic systems have been adopted. The main barrier to increasing the terrestrial solar photovoltaics development rates is a relatively high cost of the solar electric power. The ways for reducing the cost are the rise of the efficiency of power systems and the reduction of the material consumption for arrays based on multijunction solar cells. Results of multijunction solar cells and modules developments for space and terrestrial solar arrays are discussed in the article. In the last years, a significant experience on creation of multijunction solar cells was accumulated. Cascade solar cells and solar photovoltaic installations on their base with sunlight concentrators have been developed. At present, the terrestrial cascade solar cell efficiency exceeds 45%, which is substantially higher than that in conventional Si and thin-film solar arrays. The cascade solar cell efficiency increase has been achieved at the expense of splitting the sunlight spectrum into several intervals by the solar cell semiconductor structure fulfilling more effective photon energy conversion of each of these intervals in a definite parts of this structure. It is shown that multijunction solar cells provide the highest efficiency and they are the basic components of space arrays. Multijunction solar cells provide the highest conversion efficiency of concentrated sunlight as well. It opens prospects for decreasing the solar cell area and cost proportionally to the sunlight concentration. Developed concentrated photovoltaic installations are promising for wide applications in the high scale terrestrial solar photovoltaic energetics.

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Multijunction solar arrays for space and terrestrial applications

Андреев

2020

Vestn. Ross. univ. družby nar., Ser. Inž. issled.

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“…Фотоэлектрические преобразователи (ФЭП) солнечного излучения являются основным источником электропитания космических аппаратов и при этом находятся в условиях открытого космического пространства, что обусловливает повышенные требования, предъявляемые к технологии формирования ФЭП в составе солнечных батарей [1][2][3][4]. ФЭП должны обладать повышенной стойкостью при работе в экстремальных условиях окружающей среды: в условиях повышенной радиации, при высокой интенсивности солнечного излучении и в условиях значительного перепада температур.…”

Section: Introductionunclassified

Электрохимическое Осаждение Контактных Материалов В Постростовой Технологии Фотоэлектрических Преобразователей

Малевская¹,

Ильинская²,

Малевский³

et al. 2022

Физика И Техника Полупроводников

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Investigations and modeling of ohmic contacts electrochemical deposition process in postgrowth technology of photovoltaic converters fabrication have been carried out. The technology of Ag/Au contact system galvanic deposition at vertical and horizontal position of heterostructure and anode in the electrolyte has been developed. The increase of contact system deposition uniformity up to ∼ 95% at the thickness of contact bus-bars ∼ 5 µm on the heterostructure area with 4 inch diameter has been archived.

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“…Being this the pattern, the arrival of some company specialized in tracker developments able to comply with CPV specifications and solving that chronic "last minute problem" of concentrator developers was a matter of time, and to our knowledge 1 first happened with Inspira, SL, the company that four classmates from the ETSI Telecomunicación of Madrid, Ramón Nistal, José López, Javier Requejo and myself found back in 1995, with the financial help of research and entrepreneurship grants awarded by the Dirección General de Investigación of the Comunidad Autonoma de Madrid. After making its debut with tracking control development with the EUCLIDES project, the most representative CPV project of the '90s, based on the work of Jose Carlos Arboiro and Gabriel Sala from the Instituto de Energía Solar, Inspira kept increasing its know-how and experience on CPV tracker development through a wide set of R&D projects, many of them funded through the European Commission's R&D Framework Programs.…”

Section: Prefacementioning

confidence: 99%

Control de seguimiento solar de alta precisión con autocalibración

Heredia¹

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In the small Andalusian village of Arbuniel, in Sierra Mágina, Calle Sol goes from Plaza de España, where the church and the town hall, down to Calle Divertida (Funny Street), where Gustavo is making his breakfast "churros" since cockcrow (which does really happen here).next goal is the precise measurement of the tracking accuracy being achieved by the proposed hybrid calibrated tracking control. This will first require the development of a Tracking Accuracy Sensor (TAS) able to provide real time measurements of the sun tracking error. This sensor essentially consists of a collimating pipe mounted on top of an imaging electronic sensor, with the necessary signal conditioning electronics, developed along with the conversion equations necessary to compute a tracking error angle from its internal electric variables, and also with the calibration procedure to accurately obtain the internal construction parameters of the sensor that intervene in these conversion equations. This sensor will end up featuring the rather impressive resolution of 1/10.000 th degree within its 1° acceptance angle. Finally a monitoring system is built around the TAS mounted in the referred laboratory tracker, and by calibrating the controller against this TAS, a best case estimate of the tracking accuracy statistics, can be obtained for several variations of the calibrated routine here developed. In these experiments average daily accuracies of 0.05° are proven possible with accuracies better than 0.1°, 97% of the time.All tests in Chapter 3 to prove the correct operation of the calibrated sun tracking control, had to previously collect a set of in between fifty and a hundred sun position measurements, throughout a day from dawn to dusk, in order to feed the fitting of the calibration model. This was to be manually done, by aiming the laboratory tracker with its CPV modules to the sun till, according to some criterion, best pointing accuracy was obtained, and then recording axes position along with a measurement time stamp. This was a boring and error prone task, that had to be fully automated in order to be feasibly integrated in a commercial tracking controller unit, so it would run with the least amount manual operation and maintenance. In Chapter 4 the necessary hardware and algorithms to implement the automatic collection of sun position measurements are explained. But prior to the full description of the automatic measurement acquisition process, a review of the existent sun ephemerides and their accuracy is presented, including the set finally chosen for the tracking controller described in this work. Regarding sun position measurements these can first start by a preliminary search of the sun within the concentrator's tracking range, till this gets within the acceptance angle, a problem which as will be described can be attacked mathematically by resorting to the toolbox of Search Theory, a branch of Operations Research developed during WWII for antisubmarine warfare. In particular when helping the search with a coarse sun sensor such...

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III–V Solar Cells and Concentrator Arrays

Cited by 8 publications

References 65 publications

Multijunction solar arrays for space and terrestrial applications

Multijunction solar arrays for space and terrestrial applications

Электрохимическое Осаждение Контактных Материалов В Постростовой Технологии Фотоэлектрических Преобразователей

Control de seguimiento solar de alta precisión con autocalibración

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