Abstract
This paper proposes the use of fiber Bragg gratings (FBG) in thermal monitoring of photovoltaic (PV) modules. Results acquired from FBG sensors were compared with two commonly used temperature sensing techniques in PV modules: PT100 sensors and infrared cameras. The experiments were performed using a PV module in actual operating conditions (varying ambient temperature and wind speed). Temperature changes in PV module were monitored with 27 FBG sensors installed on its front surface. During the experiments the ambient temperature, intensity of solar radiation and wind velocity were also monitored. The acquired results showed that FBG sensing technology has a potential for the proposed application.
Highlights
After the oil shortage faced by industrial countries in the 70s, in the period of 1973-1978, other types of power generation were to be researched so that the energy problem could be solved by renewable sources to ensure the supply of the industrial needs in the world
Data analysis was performed comparing the measurements obtained by the optical fiber sensors to the PT100 sensor data and to thermal imaging obtained with the infrared camera
If the PV module was left in open circuit voltage, most of the incoming solar radiation would be converted to heat [30]
Summary
1978, other types of power generation were to be researched so that the energy problem could be solved by renewable sources to ensure the supply of the industrial needs in the world. In contrast to the other renewable technologies for power generation, the development pace of the photovoltaic systems market share has been relatively slow. It indicates two major disadvantages based on the higher cost of the PV models and their lower energy efficiency (15% to 21% for crystalline silicon panels). Among the eight major economic and technological goals of the photovoltaic industry to be achieved by 2020, an increased conversion efficiency of commercial cells
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