期刊
RENEWABLE ENERGY
卷 43, 期 -, 页码 331-342出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2011.12.001
关键词
Mutual shadows; Two-axis tracking; Productivity; Grid-connected PV system; Numerical optimization
The performance improvement obtained from the use of trackers in a PV system cannot be separated from the higher requirement of land due to the mutual shadows between generators. Thus, the optimal choice of distances between trackers is a compromise between productivity and land use to minimize the cost of the energy produced by the PV system during its lifetime. This paper develops a method for the estimation and optimization of the cost of energy function. It is built upon a set of equations to model the mutual shadows geometry and a procedure for the optimal choice of the wire cross-section. Several examples illustrate the use of the method with a particular PV system under different conditions of land and equipment costs. This method is implemented using free software available as supplementary material. (C) 2011 Elsevier Ltd. All rights reserved.
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