Concentrating solar module with horizontal reflectors

Matsushima, Toshio; Setaka, Tatsuyuki; Muroyama, S.

doi:10.1016/s0927-0248(02)00156-3

Cited by 34 publications

(10 citation statements)

References 3 publications

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“…We used a reflector for PV system to model the solar system for BRDF [29]. The analysis method of integrative in which irradiation to point differential for PV module represented by (dx) from each differential scattering element on the reflector in (dy) to direction of dx has been presented [30]. So, in two dimension that is x and y-axis, integration is performed to show the solar irradiation on module surface.…”

Section: Electrical Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Design of a Building-Integrated Photovoltaic System with a Novel Bi-Reflector PV System (BRPVS) and Optimal Control Mechanism: An Experimental Study

et al. 2018

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Environment protection and energy saving are the most attractive trends in zero-carbon buildings. The most promising and environmentally friendly technique is building integrated photovoltaics (BIPV), which can also replace conventional buildings based on non-renewable energy. Despite the recent advances in technology, the cost of BIPV systems is still very high. Hence, reducing the cost is a major challenge. This paper examines and validates the effectiveness of low-cost aluminum (Al) foil as a reflector. The design and the performance of planer-reflector for BIPV systems are analyzed in detail. A Bi-reflector solar PV system (BRPVS) with thin film Al-foil reflector and an LLC converter for a BIPV system is proposed and experimented with a 400-W prototype. A cadmium-sulfide (CdS) photo-resistor sensor and an Arduino-based algorithm was developed to control the working of the reflectors. Furthermore, the effect of Al-foil reflectors on the temperature of PV module has been examined. The developed LLC converter confirmed stable output voltage despite large variation in input voltage proving its effectiveness for the proposed BRPVS. The experimental results of the proposed BRPVS with an Al-reflector of the same size as that of the solar PV module offered an enhancement of 28.47% in the output power.Electronics 2018, 7, 119 2 of 22 the long-term cost of the building sector. Compared to a standalone PV system, BIPV does not require any extra land for installation and the cost can be balanced by installing this on the rooftop of the building structure [3]. However, the lower efficiency and higher initial cost make BIPV less practical and difficult to commercialize. Dye-Sensitized Solar Cells (DSSCs) have attracted considerable attention in recent years because of their simple assembly, lightweight, flexibility, economical price of materials, satisfactory photocurrent transformation efficiency, precise energy return time, and tunable optical properties [4]. On the other hand, DSSCs have power conversion efficiency of more than 14% with a limited active area; the output power decreases with increasing cell effective area of the photoanode [5]. An alternate solution exists to increase the net output power from the PV module to reduce the cost of the system because the initial cost of the PV system is the main hurdle to the widespread use of this technology. The output power can be increased by increasing the incident light on the PV system [6]. The position of the Sun is not fixed to one place because it changes its position from dawn to dusk and also during the entire year, which means that a fixed PV system is inefficient. Therefore, the tracking of single-and dual-axis PV systems are suggested for this purpose [7,8]. On the other hand, such a system has two disadvantages, increase in initial cost and decreased lifetime of the mechanical parts of the PV system. Moreover, such a system also requires extra power supply and motors to move the solar system, which makes the system more complex and increases the size of the ...

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Section: Electrical Modelingmentioning

confidence: 99%

“…The solar module has a glass layer with a lens array on the top and a reflector on bottom side [29]. A reflector perpendicular to the PV panel with a width 2.7 times the panels obtains a result of 1.5 at solar noontime and was used keeping in view weather conditions of Tokyo, Japan [30]. Khan et.…”

Section: Introductionmentioning

confidence: 99%

Design of a Building-Integrated Photovoltaic System with a Novel Bi-Reflector PV System (BRPVS) and Optimal Control Mechanism: An Experimental Study

et al. 2018

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“…The mono-facial system with a concentration ratio of 1.6 could collect 90% of the annual irradiation. The performance of the flat PV concentrator has further been investigated through improving the diffuse reflector design and replacing conventional solar cells with 2 mm wide cells [18][19][20][21]. Luminescent concentrators are also suitable for use in building windows, however, their performance needs to be further optimised, e.g.…”

Section: Introductionmentioning

confidence: 99%

Smart solar concentrators for building integrated photovoltaic façades

Connelly

Liu

et al. 2016

Solar Energy

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Abstract:In this study a novel static concentrating photovoltaics (PV) system, suitable for use in windows or glazing façades, has been designed. The developed smart Concentrating PV (CPV) system is lightweight, low cost and able to generate electricity. Additionally, this system automatically responds to climate by varying the balance of electricity generated from the PV with the amount of solar light and heat permitted through it into the building. It therefore offers the potential to contribute to, and control, energy consumption within buildings. A comprehensive optical analysis of the smart CPV is undertaken via 3-D ray tracing technique. To obtain optimal overall optical performance of the novel smart CPV, analysis has been based upon all necessary design parameters including the average reflectivity of the thermotropic reflective layer, the glazing cover dimension, the glazing cover materials as well as the dimensions of the solar cells. In addition, a hydroxypropyl cellulose (HPC) hydrogel polymer, suitable for use as the reflective thermotropic layer for the smart CPV system, was synthesized and experimentally studied.

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“…For a latitude of 60°N and a specular reflector with a reflectivity of 0.8, a gain in annual output from a-Si PV modules of up to 25% was predicted. Matsushima et al [14] explored the benefit of adding booster reflectors by placing the reflector at a 90°angle with a cSi PV module and varying the inclination of the assembly. With a latitude of about 35°N (Tokyo, Japan) and a specular reflector with a reflectivity of 0.95, a gain of 50% in produced electricity was estimated.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of the influence of string mismatch on the yield of PV modules augmented by static planar reflectors

Pavlov

Migan

Bourdin

et al. 2015

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)

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Abstract-Photovoltaic (PV) modules are generally installed by the application of empirical rules aimed at reducing shadows during the periods of high solar irradiation. A traditional installation on a horizontal surface results in largely spaced rows of modules with a relatively low tilt angle. The addition of inter-row reflectors results in more direct and diffuse flux transmitted to the cells. The "Aleph" (Amélioration de l'Efficacité Photovoltaïque) project aims to define clear rules for optimal settings of systems of PV module rows with fixed inter-row planar reflectors in a given location and under a given climate. Two PV technologies are tested for performance with this type of system: amorphous silicon (a-Si) and polycrystalline silicon (p-Si). This work combines experiments on panel behavior in an outdoor environment on the SIRTA (Site Instrumental de Recherche par Télédétection Atmosphérique) meteorology platform and a multiphysics numerical model used to couple all the important physical phenomena and accurately describe the system behavior. The model includes a ray tracing radiation/optics module based on the Monte-Carlo method, as well as an electrical module simulated in SPICE. This work presents the influence of the string mismatch losses, present at periods of heterogeneous illumination, on the yield of PV modules augmented by static planar reflectors.

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Concentrating solar module with horizontal reflectors

Cited by 34 publications

References 3 publications

Design of a Building-Integrated Photovoltaic System with a Novel Bi-Reflector PV System (BRPVS) and Optimal Control Mechanism: An Experimental Study

Design of a Building-Integrated Photovoltaic System with a Novel Bi-Reflector PV System (BRPVS) and Optimal Control Mechanism: An Experimental Study

Smart solar concentrators for building integrated photovoltaic façades

Experimental and numerical study of the influence of string mismatch on the yield of PV modules augmented by static planar reflectors

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