Abstract

Improving the efficiency of solar panels is the main task of solar energy generation. One of the methods is a solar tracking system. One of the most important parameters of tracking systems is a precise orientation to the Sun. In this paper, the performance of single-axis solar trackers based on schedule and light dependent resistor (LDR) photosensors, as well as a stationary photovoltaic installation in various weather conditions, were compared. A comparative analysis of the operation of a manufactured schedule solar tracker and an LDR solar tracker in different weather conditions was performed; in addition, a simple method for determining the rotation angle of a solar tracker based on the encoder was proposed. Finally, the performance of the manufactured solar trackers was calculated, taking into account various weather conditions for one year. The proposed single-axis solar tracker based on schedule showed better results in cloudy and rainy weather conditions. The obtained results can be used for designing solar trackers in areas with a variable climate.

Highlights

  • The development of solar energy conversion methods inevitably lead to the development of autonomous systems based on photovoltaic panels, such as portable and low-power solar power plants, street lighting systems, transport, Smart Grid systems, etc

  • A more detailed study of the performance and comparative analysis of solar trackers based on light dependent resistor (LDR) and schedule in adverse weather conditions have not been performed

  • As a result of this work, it was found that the schedule-based solar tracking system is 4.2% more efficient than LDR solar trackers in different weather conditions

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Summary

Introduction

The development of solar energy conversion methods inevitably lead to the development of autonomous systems based on photovoltaic panels, such as portable and low-power solar power plants, street lighting systems, transport, Smart Grid systems, etc. When developing and designing any autonomous systems, there is a question of a compromise between the reliability, ease of implementation, cost, and efficiency of photovoltaic systems [1,2,3,4]. There are various methods and technologies that increase the efficiency of photovoltaic systems. One of these methods is a solar tracking system (solar tracker). Solar trackers are divided into two main groups depending on their rotation mechanism: single-axis trackers and two-axis trackers. Both groups increase the efficiency of solar cells [5,6,7,8]

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