Solar instrument shows temperature jumps randomly

How is temperature measured on a solar panel?

The temperature at three points is measured using the FBG sensor. This three-point measurement is selected based on the pre-measurement experiments conducted on the same panel with more diagonal locations. Researchers can vary the number of sensor locations based on the solar panel type and size.

How do solar panels reduce temperature?

Air and water cooling with phase change material behind the solar PV reduces the panel temperature to 7.5 °C compared to conventional PV panels . The temperature of PV modules is mainly monitored using conventional techniques such as thermocouples, Resistance Temperature Detector (RTD) sensors, and thermal imaging cameras .

How does temperature affect solar photovoltaic (PV) performance?

Solar photovoltaic (PV) performance is affected by increased panel temperature. Maintaining an optimal PV panel temperature is essential for sustaining performance and maximizing the productive life of solar PV panels. Current temperature sensors possess a long response time and low resolution and accuracy.

Can FBG sensor determine solar PV panel temperature?

The sensor performance is investigated on monocrystalline and polycrystalline panels in indoor and outdoor environments. The present study's uniqueness is employing FBG sensor to determine solar PV panel temperature on indoor and outdoor experiments with minimal measurement points on a solar panel.

Does inclination angle affect solar panel temperature?

Moreover, the effect of radiation flux and inclination angle on the panel temperature is investigated. It is demonstrated that the reflected wavelength and the reflectance of the sensor are directly proportional to the radiation flux incidence. Temperature sensitivity of 6 pm/°C is sufficient for solar applications.

How to detect hot spots in solar modules?

IR Thermography can be used as an early detection tool for hot spots in solar modules. Further, various detection techniques like I-V curve measurement, EL imaging, insulation resistance measurement etc. can be adopted for comprehensive fault detection and remedial actions to be taken.