A fiber bragg grating-bimetal temperature sensor for solar panel inverters
This paper reports the design, characterization and implementation of a Fiber Bragg Grating (FBG)-based temperature sensor for an Insulted-Gate Bipolar Transistor (IGBT) in a solar panel inverter. The FBG is bonded to the higher Coefficient of Thermal Expansion (CTE) side of a bimetallic strip to in...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
MDPI
2011
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/4658/1/Ismail-2011-A_Fiber_Bragg_Gratin.pdf http://eprints.um.edu.my/4658/ https://doi.org/10.3390/s110908665 |
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| Summary: | This paper reports the design, characterization and implementation of a Fiber Bragg Grating (FBG)-based temperature sensor for an Insulted-Gate Bipolar Transistor (IGBT) in a solar panel inverter. The FBG is bonded to the higher Coefficient of Thermal Expansion (CTE) side of a bimetallic strip to increase its sensitivity. Characterization results show a linear relationship between increasing temperature and the wavelength shift. It is found that the sensitivity of the sensor can be categorized into three characterization temperature regions between 26 degrees C and 90 degrees C. The region from 41 degrees C to 90 degrees C shows the highest sensitivity, with a value of 14 pm/degrees C. A new empirical model that considers both temperature and strain effects has been developed for the sensor. Finally, the FBG-bimetal temperature sensor is placed in a solar panel inverter and results confirm that it can be used for real-time monitoring of the IGBT temperature. |
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