Design optimization of ultra-high concentrator photovoltaic system using two-stage non-imaging solar concentrator

2017 International Conference on New Energy and Future Energy System

Wong, C.-W.^1 ; Yew, T.-K.^1 ; Chong, K.-K.^1 ; Tan, W.-C.^1 ; Tan, M.-H.^2 ; Lim, B.-H.^1

Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Bandar Sungai Long, Selangor Kajang

43000, Malaysia^1

Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Perak Kampar

31900, Malaysia^2

关键词: Compound parabolic concentrator;    Concentrator photovoltaic systems;    Concentrator photovoltaics;    Design optimization;    Dish concentrator;    Mirror reflectivity;    Optical efficiency;    Solar concentration;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/93/1/012012/pdf
DOI  :  10.1088/1755-1315/93/1/012012

来源: IOP

【 摘 要 】

This paper presents a systematic approach for optimizing the design of ultra-high concentrator photovoltaic (UHCPV) system comprised of non-imaging dish concentrator (primary optical element) and crossed compound parabolic concentrator (secondary optical element). The optimization process includes the design of primary and secondary optics by considering the focal distance, spillage losses and rim angle of the dish concentrator. The imperfection factors, i.e. mirror reflectivity of 93%, lens' optical efficiency of 85%, circumsolar ratio of 0.2 and mirror surface slope error of 2 mrad, were considered in the simulation to avoid the overestimation of output power. The proposed UHCPV system is capable of attaining effective ultra-high solar concentration ratio of 1475 suns and DC system efficiency of 31.8%.