Abstract: 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 °C and 90 °C. The region from 41 °C to 90 °C shows the highest sensitivity, with a value of 14 pm/°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.
Keywords: Fiber Bragg Grating; bimetal strip; temperature sensor; solar panel inverter
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Ismail, M.A.; Tamchek, N.; Hassan, M.R.A.; Dambul, K.D.; Selvaraj, J.; Rahim, N.A.; Sandoghchi, S.R.; Adikan, F.R.M. A Fiber Bragg Grating—Bimetal Temperature Sensor for Solar Panel Inverters. Sensors 2011, 11, 8665-8673.
Ismail MA, Tamchek N, Hassan MRA, Dambul KD, Selvaraj J, Rahim NA, Sandoghchi SR, Adikan FRM. A Fiber Bragg Grating—Bimetal Temperature Sensor for Solar Panel Inverters. Sensors. 2011; 11(9):8665-8673.
Ismail, Mohd Afiq; Tamchek, Nizam; Hassan, Muhammad Rosdi Abu; Dambul, Katrina D.; Selvaraj, Jeyraj; Rahim, Nasrudin Abd; Sandoghchi, Seyed Reza; Adikan, Faisal Rafiq Mahamd. 2011. "A Fiber Bragg Grating—Bimetal Temperature Sensor for Solar Panel Inverters." Sensors 11, no. 9: 8665-8673.