Light distribution and uniformity evaluation of cross compound parabolic concentrators

Al-Shidhani, Mazin, Alnajideen, Mohammad ORCID: https://orcid.org/0000-0001-9408-6893 and Min, Gao 2022. Light distribution and uniformity evaluation of cross compound parabolic concentrators. Presented at: 49th Photovoltaics Specialists Conference, Philadelphia, PA, USA, 05-10 June 2022. 2022 IEEE 49th Photovoltaics Specialists Conference (PVSC). IEEE, 0395-0395. 10.1109/PVSC48317.2022.9938737

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Abstract

Concentrator photovoltaic systems are capable of generating electric power from sunlight more than that produced from unconcentrated systems of the same photovoltaic material and size, thus beneficial to reduce photovoltaic areas and costs. In this work, we propose a Compound Parabolic Concentrator (CPC) for low concentration photovoltaic systems. A symmetrical CPC, which has a square entry and exit apertures known as a Cross CPC (CCPC), has been optically simulated and tested under a standard test condition for different geometrical concentration ratios of 2.9x, 4.0x, 6.0x, 8.0x and 9.0x. These concentrators were coupled to the same mono crystalline laser grooved buried contact silicon solar cell to acquire the characteristic current-voltage (I-V) curves. The design, simulation, fabrication and experiment testing of concentrators are presented. The non-uniformity light distribution across the receiver surface area and its effect on the power output of solar cell is demonstrated and validated. A new batch of five concentrators referred as an improved design has been fabricated and tested to validate the ray tracing simulation. A comparative study between the old and new CPC designs is conducted based on the I- V performance curves. It has been proven that high uniformity of over 90% can be achieved by adjusting the solar cell at an optimal position, which varies based on the geometrical aspects of a CPC.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	978-1-7281-6117-4
Last Modified:	23 Jan 2025 10:07
URI:	https://orca.cardiff.ac.uk/id/eprint/175395

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