Energy consumption of a two-axis solar tracker with redundantly actuated parallel mechanism
YU Zhenyang, WU Jun, ZHANG Binbin
Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipment and Control, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
Abstract：The traditional two-axis solar tracker with serial mechanism has low stiffness and large energy consumption. To overcome these disadvantages, a two-axis solar tracker with redundantly actuated parallel mechanism is proposed and its energy consumption is investigated. Based on the kinematic model of the two-axis solar tracker, the dynamic model is derived by using the principle of virtual work. By taking Beijing as a sample city where the tracker is placed, the trajectory planning of the tracker is investigated. The driving force and energy consumption of the solar tracker and its corresponding nonredudnant counterpart in spring equinox are compared. The proposed solar tracker has high stiffness and low energy consumption.
于振洋, 吴军, 张彬彬. 一种并联式太阳能聚光器二轴跟踪机构能量消耗[J]. 清华大学学报（自然科学版）, 2019, 59(4): 284-290.
YU Zhenyang, WU Jun, ZHANG Binbin. Energy consumption of a two-axis solar tracker with redundantly actuated parallel mechanism. Journal of Tsinghua University(Science and Technology), 2019, 59(4): 284-290.
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2019, Vol. 59 
