Designs, control strategies for PV-integrated shading devices – pv magazine International

Photovoltaic blinds in buildings offer energy efficiency and power generation, but an international research group says their commercial viability will depend on the control strategies used to optimize performance.

An international research group conducted a comprehensive review of all designs and control strategies for PV-Integrated Shading Devices (PVSD), to help bring the technology closer to commercial viability.

“Currently, the application of solar panels to kinetic shading devices is very limited, so it is not possible to find instances implemented in urban buildings, despite some prototypes,” said the researcher. . Ayca Kirimtat said photo magazine. “The basic criterion to be considered before setting up such a system is and always will be the return on investment rather than the sustainable energy development for a green life. The cost of implementing conventional panels is very high for many customers and custom panels for shading devices would be significantly higher. However, given the fundamentals of new product development, costs should be automatically lowered by the market as demand increases.

Kirimtat and his colleagues said module orientation is crucial in PVSDs because it balances power generation and sunlight utilization to reduce the heating, building cooling and lighting needs.

The control strategies used to optimize the performance of brise-soleils have been divided into three groups. Use of hard control techniques dynamic systems such as energy and daylight simulation models to assess the behavior of buildings. Soft control methods use mathematical models to predict system behavior analytically. Other techniques involve reinforcement of learning control and multi-agent control, while hybrid methodologies are based on all of these approaches.

The scientists presented a detailed literature matrix to provide an overview of previous studies on different methods of PVSD in buildings. It was based on PVSD type, control strategy and building type, with 77 business cases identified and briefly presented.

Scientists have stressed the importance of considering monitoring the long-term performance of PVSDs as a crucial aspect for their viability, as well as the question of replacing blinds.

“To shorten the payback time of PVSD systems, the use of relevant control methods should be encouraged in the early design process of these systems,” they said. “However, for each PVSD design, the optimal control method could change depending on climatic characteristics, building type and orientation.

Kirimtat said the commercial viability of PVSDs could be accelerated by green energy policies governed by governments.

“Simple and less expensive solutions offered by competitive market players will be beneficial for this niche market to reach a certain size. Every market, whether niche or not, would eventually mature, by definition,” she said.

She estimates that it would be possible to see examples of photovoltaic panels working on kinetic shading devices in 10 to 15 years.

The scientists presented their findings in “Controlling PV Integrated Shading Devices in Buildings: A Reviewwhich was recently published in Building and Environment. The research team includes scientists from Hradec Kralove University in Czechia, Auburn University in the United States and Zilina University in Slovakia.

The main objective of this article is to offer an interdisciplinary approach andstate-of-the-art integrated practices of PVSD systems using various controls methods and technologies. A systematic review of the literature was in progresstaken in order to conceptualize and offer comprehensive knowledge,” the scientists said.

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