研究目的
Investigating the design and performance improvement of V-trough Solar Concentrators (VSC) for photovoltaic applications to achieve higher concentration ratios and optical efficiencies with reduced production costs.
研究成果
The novel V-trough solar concentrator design demonstrates significant improvements in concentration ratio and optical efficiency, with potential for cost reduction in production. The study suggests further development and integration of the DVSC in full concentrator systems for rooftop and low CPV applications.
研究不足
The study acknowledges the discrepancy between calculated and measured concentration ratios for pyramid concentrators due to inactive corner areas. The optical efficiency of the proposed DVSCs is slightly lower than conventional VSCs due to additional optical losses from added reflectors.
1：Experimental Design and Method Selection:
The study involved theoretical approaches, ray-tracing simulation, and experimental validations to optimize the VSC design.
2：Sample Selection and Data Sources:
Four concentrators of each type (conventional VSC, Pyramid, and DVSC) were designed at different reflector tilt-angles.
3：List of Experimental Equipment and Materials:
SOLIDWORKS? for frame design, 3D printer (ULTIMAKER Extended 2+?) for printing, highly reflective aluminium thin films (spectral reflectivity of 95%, Alanod GmbH) for reflective surfaces, Laser Grooved Buried Contact (LGBC) monocrystalline silicon cell, direct copper-bonded (DCB) alumina ceramic plate, aluminium water-cooled stage, thermocouple (K-type), thermal grease (thermal conductivity of
4：9 W.m-K-1), class ABB solar simulator (Oriel LCS-100 Newport Instrument), AUTOLAB I-V tracer (PGSTAT302N), PICO data logger. Experimental Procedures and Operational Workflow:
The concentrators were designed, simulated, constructed, and tested under standard test conditions (1kW/m2 AM
5：5G, 25°C). Data Analysis Methods:
The performance was evaluated based on short-circuit current, power output, concentration ratio, and optical efficiency.
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SOLIDWORKS
Dassault Systèmes
Used for designing the frames of the concentrators.
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3D printer
ULTIMAKER Extended 2+
Ultimaker
Used for printing the concentrator frames.
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highly reflective aluminium thin films
Alanod GmbH
Used as reflective surfaces for the concentrators.
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Laser Grooved Buried Contact monocrystalline silicon cell
Used as the PV cell in the concentrator system.
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direct copper-bonded alumina ceramic plate
Used for mounting the PV cell.
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aluminium water-cooled stage
Used to maintain the temperature of the PV cell at 25°C during testing.
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thermocouple
K-type
Used for temperature monitoring.
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thermal grease
Used to ensure good thermal contact.
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solar simulator
Oriel LCS-100
Newport Instrument
Used to provide uniform illumination for testing.
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AUTOLAB I-V tracer
PGSTAT302N
Used to acquire the I-V characteristics of the PV cell under illumination.
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PICO data logger
Used for automatic monitoring and recording of temperatures.
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