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A Fiber Bragg Grating—Bimetal Temperature Sensor for Solar Panel Inverters
Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
Faculty of Engineering, Multimedia University, 63100 Cyberjaya, Selangor, Malaysia
Photonic Research Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
* Author to whom correspondence should be addressed.
Received: 27 July 2011; in revised form: 27 August 2011 / Accepted: 5 September 2011 / Published: 6 September 2011
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.