Next Article in Journal
A Revised LRSPR Sensor with Sharp Reflection Spectrum
Previous Article in Journal
Sequential and Automatic Image-Sequence Registration of Road Areas Monitored from a Hovering Helicopter
Open AccessArticle

Fiber Bragg Grating Temperature Sensors in a 6.5-MW Generator Exciter Bridge and the Development and Simulation of Its Thermal Model

1
Graduate Program in Electrical and Computer Engineering, Federal University of Technology-Paraná, Curitiba-PR 80230-901, Brazil
2
University of Applied Science, Munich 80335, Germany
3
Electrical Engineering Graduate Program, Federal University of Technology-Paraná, Pato Branco-PR 85503-390, Brazil
*
Author to whom correspondence should be addressed.
Sensors 2014, 14(9), 16651-16663; https://doi.org/10.3390/s140916651
Received: 27 April 2014 / Revised: 8 August 2014 / Accepted: 1 September 2014 / Published: 5 September 2014
(This article belongs to the Section Physical Sensors)
This work reports the thermal modeling and characterization of a thyristor. The thyristor is used in a 6.5-MW generator excitation bridge. Temperature measurements are performed using fiber Bragg grating (FBG) sensors. These sensors have the benefits of being totally passive and immune to electromagnetic interference and also multiplexed in a single fiber. The thyristor thermal model consists of a second order equivalent electric circuit, and its power losses lead to an increase in temperature, while the losses are calculated on the basis of the excitation current in the generator. Six multiplexed FBGs are used to measure temperature and are embedded to avoid the effect of the strain sensitivity. The presented results show a relationship between field current and temperature oscillation and prove that this current can be used to determine the thermal model of a thyristor. The thermal model simulation presents an error of 1.5 °C, while the FBG used allows for the determination of the thermal behavior and the field current dependence. Since the temperature is a function of the field current, the corresponding simulation can be used to estimate the temperature in the thyristors. View Full-Text
Keywords: fiber Bragg grating; generator excitation bridge; semiconductor thermal model; temperature measurement; thermal model simulation fiber Bragg grating; generator excitation bridge; semiconductor thermal model; temperature measurement; thermal model simulation
MDPI and ACS Style

De Morais Sousa, K.; Probst, W.; Bortolotti, F.; Martelli, C.; Cardozo da Silva, J.C. Fiber Bragg Grating Temperature Sensors in a 6.5-MW Generator Exciter Bridge and the Development and Simulation of Its Thermal Model. Sensors 2014, 14, 16651-16663.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Search more from Scilit
 
Search
Back to TopTop