Abstract

AbstractThis paper presents a comparative study of one DOF mechanisms with one input and two correlated outputs connected to both diurnal and elevation orientation movements from dual-axis solar tracking systems. Based on known solutions from the literature, the paper provides a systematization of the existing one DOF mechanism variants; thus, there were identified two main categories: (a) four-bar spatial linkage, with or without adjusting link lengths, and (b) planar linkage serially connected with a cam mechanism. The comparative kinematical studies of two representative one DOF mechanism variants allow highlighting the advantages and drawbacks each category, the compound mechanism with cylindrical cam and 4R planar linkage being the most recommended for tracking small PV systems. Considering applications based on location Brasov, Romania, there are drawn useful conclusions for researchers, designers and specialists to set the best orientation solution suitable to a given location.KeywordsDual-axis azimuth solar trackingOne DOF mechanismSpatial linkageFour-bar linkageSlider-rocker linkageCam mechanismTransmission angle

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