研究目的
To achieve the uniformity of energy ?ux on receiver in a re?ective high concentration photovoltaic (RHCPV) system and to study the impacts of theoretical concentration ratio on the system's performance.
研究成果
The two-stage re?ective concentrator design achieved high uniformity (>99.5%) and effective area ratio (77.0%) for photoelectric conversion. The effective area, maximum irradiance, and average irradiance were unaffected by focal length changes at constant concentration ratios. Linear relationships were found between irradiance metrics and theoretical concentration ratios. The microchannel radiator effectively reduced GaAs solar cell surface temperature with increased ?ow rate.
研究不足
The study is based on numerical simulations, and practical implementation may face challenges not accounted for in the model. The impact of tracking errors and real-world environmental conditions on system performance was not fully explored.
1：Experimental Design and Method Selection:
A two-stage re?ective mirror-type concentrator was designed and numerically simulated using TRACEPRO software to achieve uniformity of energy ?ux on the receiver.
2：Sample Selection and Data Sources:
The study focused on the RHCPV system with GaAs solar cells, using simulation data for analysis.
3：List of Experimental Equipment and Materials:
The system included a primary re?ector (PR), a secondary concentrator (SC), and a receiver (GaAs solar cells).
4：Experimental Procedures and Operational Workflow:
The simulation involved modeling the concentrator's performance under various theoretical concentration ratios and focal lengths.
5：Data Analysis Methods:
The uniformity of energy ?ux was measured using an American national standard (ANSI/NAPMIT7.228-1997), and the relationships among theoretical concentration ratio, uniformity, focal length, and irradiance were analyzed.
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