Photovoltaic power generation enhancement performance with a LDR-based dual-axis solar tracking system

Zongjin Li; Chi Liu; Guoyang Song; Defa Han; Yingge Li; Dongxing Du; Zongjin Li; Chi Liu; Guoyang Song; Defa Han; Yingge Li; Dongxing Du

doi:10.3934/ctr.2025007

Clean Technologies and Recycling

2025, Volume 5, Issue 2: 127-142. doi: 10.3934/ctr.2025007

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Research article

Photovoltaic power generation enhancement performance with a LDR-based dual-axis solar tracking system

1.
Geo-Energy Research Institute, College of Electromechanical Engineering, Qingdao University of Science and Technology, Gaomi 261550, China
2.
College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266100, China

Received: 28 May 2025 Revised: 02 August 2025 Accepted: 02 September 2025 Published: 12 September 2025

In this work, the enhancement of the solar cell output in a light-dependent resistor (LDR)-based dual-axis solar tracking system (DASTS) in a fixed solar panel system was quantified under different seasons and weather conditions in the city of Qingdao, China. Measurement results show that DASTS could significantly improve power generation efficiency, providing 9.9%–12.8% and 30.6%–32.8% extra daily power output over a fixed-angle system in winter and spring, respectively. It was also found that the power output of the solar panel is higher during the noon period of winter than in spring. Special attention was therefore placed on the effect of panel temperature on the solar panel photovoltaic (PV) conversion efficiency. A clear inverse relationship was observed between the two factors, with the PV conversion efficiency decreasing from 14.7% to 9.8% with an increased panel temperature from 20 to 55 ℃. It is concluded that, to achieve maximum solar cell panel power output, the panel temperature effect needs to be taken into consideration.
- solar cell,
- dual-axis sun tracking system,
- enhancement performance,
- panel temperature effect,
- power output
Citation: Zongjin Li, Chi Liu, Guoyang Song, Defa Han, Yingge Li, Dongxing Du. Photovoltaic power generation enhancement performance with a LDR-based dual-axis solar tracking system[J]. Clean Technologies and Recycling, 2025, 5(2): 127-142. doi: 10.3934/ctr.2025007

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Abstract

In this work, the enhancement of the solar cell output in a light-dependent resistor (LDR)-based dual-axis solar tracking system (DASTS) in a fixed solar panel system was quantified under different seasons and weather conditions in the city of Qingdao, China. Measurement results show that DASTS could significantly improve power generation efficiency, providing 9.9%–12.8% and 30.6%–32.8% extra daily power output over a fixed-angle system in winter and spring, respectively. It was also found that the power output of the solar panel is higher during the noon period of winter than in spring. Special attention was therefore placed on the effect of panel temperature on the solar panel photovoltaic (PV) conversion efficiency. A clear inverse relationship was observed between the two factors, with the PV conversion efficiency decreasing from 14.7% to 9.8% with an increased panel temperature from 20 to 55 ℃. It is concluded that, to achieve maximum solar cell panel power output, the panel temperature effect needs to be taken into consideration.

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