Tag Archive for: pv

Swedish scientists reviewed wavelength-selective PV tech for agrivoltaics and recommended creating standards for reporting their performance.

Wavelength-selective PV tech for agrivoltaic applications

Researchers at the Mälardalen University in Sweden have provided an extensive review of all wavelength-selective PV systems for applications in agrivoltaics.

“Traditional opaque silicon panels often create excessive shading that limits light availability for most shade-intolerant crops. Yet, plants do not need the full spectrum of sunlight for growth but only the region where they are photosynthetically active. In some cases, a full spectrum may even hinder their development,” the research’s lead author, Silvia Ma Lu, told pv magazine. “This opens the door for wavelength-selective solar photovoltaic (WSPV) technologies. WSPV systems are designed to transmit light at the wavelengths most beneficial for photosynthesis, while reflecting or absorbing less essential wavelengths to generate electricity.”

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Source: PV Magazine

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A Belgian-Dutch team developed new guidelines for building-integrated PV, enhancing communication between developers and module producers.

New design guidelines for integrated photovoltaics

An international research team has outlined new general design guidelines for integrated photovoltaic (IPV) modules.

“Our research introduces a novel approach by establishing design guidelines for the manufacturing of PV modules tailored to IPV, based on general product requirements rather than relying on commercially available PV modules,” the research’s lead author, Nikoleta Kyranaki, told pv magazine. “The guidelines provide a framework of options and their characteristics, facilitating communication between IPV developers and PV manufacturers to select and produce the optimal PV module for specific applications.”

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Source: PV Magazine

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MBJ Solutions launched two products for perovskite device developers: a Sun Simulator for research and a Light Soaking Unit for aging tests.

New sun simulator, light-soaking tools for perovskite solar cells, modules

Germany’s MBJ Solutions, a PV industry equipment specialist, recently launched the MBJ Steady State Sun Simulator, designed for small perovskite module characterization, and the MBJ Light Soaking Unit, made for perovskite device aging tests and preconditioning.

The market for the MBJ Solutions equipment is international, according to Volker Biemann, MBJ solutions product manager. “We have customers all over the world but mainly Europe, US and Southeast Asia,” Biemann told pv magazine.

The MBJ Steady State Sun Simulator, featuring a 500 mm x 500 mm measuring area, is made for teams developing a range of device sizes, from cells to small modules. It has a continuous Class A+ sun simulator, compliant with IEC 60904-9 Ed.3. The 22-LED unit has extended ultraviolet and infrared extended spectrum. The spectral coverage and deviation are > 98% and < 24%, respectively, It is compact, with an integrated 5 megapixel electroluminescence camera.

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Source: PV Magazine

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Researchers developed a model to quantify the benefits of VIPV on the energy needs of 3 different sizes of electric vehicle in Graz, Austria

Quantifiying benefits of vehicle-integrated photovoltaics

Researchers have developed a model to quantify the benefits of vehicle-integrated photovoltaic (VIPV) solutions on three different sizes of electric vehicles (EVs) in the city of Graz, Austria, particularly the effect on battery energy and vehicle mileage.

The model revealed several key factors that affect energy harvesting and yield for EV traffic, including insight into weight ranges, surface areas to cover with PV, what type of PV, and energy consumption.

“Our study presents a simulation model that allows for adjustments to various parameters, including time, date, driving and parking cycles, and vehicle type. This model enables comparisons of solar energy production across different seasons and usage patterns,” Judy Jalkh, corresponding author told pv magazine, adding that it calculated solar PV contributions from vehicle zones, such as the roof, hood, trunk, and doors.

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Source: PV Magazine

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Solar-powered irrigation boosts farming and cuts environmental impacts, while leasing land for solar panels offers farmers stable income.

PV agrivoltaics could revitalize Brazilian crops

Agriculture is a main economic activity of Brazil and is expected to produce BRL 2.46 trillion ($439 billion) of goods in 2024, according to estimates by the Center for Advanced Studies in Applied Economics of the University of São Paulo (USP). The academics estimate that farming will generate BRL 1.65 trillion and livestock BRL 801 billion, including machinery and service costs.

The Climate Observatory, a Brazilian NGO, estimates that 617 million tons of the total 2.3 billion gross tons of CO2 equivalent emitted by Brazil in 2022 came from agriculture. Deforestation, the nation’s top source of emissions, at 1.12 billion tons of CO2 equivalent in 2022, primarily results from clearing land for new pasture and crop fields.

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Source: PV Magazine

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Scientists in Malta have created an after-market cooling solution that can be fitted to existing standard PV modules.

PV module cooling tech based on water chamber

A group of scientists at the University of Malta has developed an after-market photovoltaic module cooling system that utilizes a water chamber that can be placed into a gap at the back of standard modules.

“The Innovative Photovoltaic Cooling System (IPCoSy) has already been patented,” the research’s corresponding author, Luciano Mulè Stagno, told pv magazine. “This invention can be advantageous for offshore or floating photovoltaic installations, due to unlimited water resources, and can also benefit both residential and industrial sectors, which aim to install photovoltaic modules and operate them at an increased efficiency.”

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Source: PV Magazine

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Researchers in Iran found that only 4% of the greenhouse’s roof must be covered with PV modules to meet lighting and pumping water demand.

Photovoltaics for hydroponic greenhouses

A research group from Iran’s University of Tehran has conducted a feasibility study for the use of PV systems in commercial hydroponic greenhouses across the country.

Their work consisted of calculating the total energy input of a strawberry greenhouse in a case study that currently runs on natural gas and electricity, and then simulating the area required by a PV system to completely replace grid electricity.

“This study aims to assess the energy and environmental aspects, as well as the practicality of employing photovoltaic cells to meet the energy requirements of a commercial hydroponic greenhouse in Alborz province,” said the scientists. “Data was gathered from a 3,000 m2 strawberry hydroponic greenhouse through on-site visits, surveys, and measurements.”

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Source: PV Magazine

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Scientists in China have developed a PV-driven direct-drive refrigeration system for electronic device cooling.

Photovoltaics for vapor compression refrigeration

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Researchers at the Hebei University of Technology in China have designed a solar photovoltaic direct-drive refrigeration system with low energy consumption for high heat-flux electronic device cooling.

“The proposed system integrates photovoltaic power generation with direct-cooling and vapor compression refrigeration (VCR),” the research’s lead author, Xiaohui Yu, told pv magazine. “The combination of micro-evaporator and direct cooling method can achieve good heat exchange efficiency.”

The system consists of two subsystems: a PV unit including a battery and an maximum power point tracking (MPPT) controller; and a VCR unit comprising a DC rotary compressor, a fin air-cooled condenser, an electronic expansion valve, an embedded direct cooling evaporator, and a dry-filler.

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Source: PV Magazine

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Sud Renovables has installed a pilot vertical rooftop PV system on one of its facilities in Barcelona, Spain.

Spanish installer tests vertical rooftop PV array based on conventional panels

Spanish rooftop PV installer SUD Renovables has deployed vertical bifacial solar panels on the rooftop of its warehouse in Avinyó, Barcelona, Spain. The system features two 500 W P6 panels from US-based SunPower and two IQ8P microinverters from Enphase Energy.

“The mounting structures have been designed according to the wind characteristics of the area, with stainless steel material,” Sud Renovables Managing Partner Manel Romero told pv magazine.

The company deployed one of the panels with its front side face facing east, and the other facing west. Each one works independently, with maximum power point tracking (MPPT).

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Source: PV Magazine

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Researchers in Italy have conducted a series of experiments to assess the quality of wheat growing under elevated agrivoltaic systems.

Wheat grows better in agrivoltaic facilities

Researchers in Italy have conducted a series of experiments to assess the quality of wheat growing under elevated agrivoltaic systems. The have found that it has greater nutritional value for livestock.

The CNR Institute for Bioeconomy, the University of Florence, and Italian agrivoltaic specialist REM Tec srl conducted the study on 11.4 hectares of wheat in Borgo Virgilio, in the province of Mantua. The system featured 7,680 Bisol panels and 768 trackers at a height of 4.5 meters, for total PV coverage of 1.3 hectares.

The team used three sections of 12 meters x 12 meters with photovoltaic coverage with a ground coverage ratio (GCR) of 13% and three sections of 144 m2 with a GCR of 41%. They also used three as reference sections with similar characteristics, but without panels and shading structures.

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Source: PV Magazine

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