Polyimide-coated fibre bragg grating (FBG) sensors for thermal mapping of electric machine windings

Kun Shang, Michael Galea, Vladimir Brusic, Serhiy Korposh, Yaping Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper presents a design concept and a prototype of a polyimide-coated Fibre Bragg Grating (FBG) thermal sensor system based on a fast scan tunable laser source (up to 1 kHz sensing frequency). This system was deployed to perform a comprehensive 2-D real-time radial and axial thermal profiling of an electromagnetic coil - the short duty cycle electric machine (EM) windings. The thermal measurements were performed using an equivalent prototype consisting of an FBG interrogator, a multi-FBG string temperature sensor, power resistors (thermal objects), and conventional thermocouples used for measurement comparison. The FBG measurements of copper windings were subsequently carried out using a copper coil with FBG sensors system to map the radial and axial temperature distribution of the coil. The experimental results show that Polyimide-coated FBG sensor can be used for multi-point temperature monitoring of electromagnetic coils with a sensing temperature range of 20-200°C, a spatial resolution of 6cm, and a measurement error of ± 2%. The obtained thermal maps can be used for the identification of hot spot locations in electromagnetic coil systems.

Original languageEnglish
Title of host publication2020 22nd International Conference on Transparent Optical Networks, ICTON 2020
PublisherIEEE Computer Society
ISBN (Electronic)9781728184234
DOIs
Publication statusPublished - Jul 2020
Externally publishedYes
Event22nd International Conference on Transparent Optical Networks, ICTON 2020 - Bari, Italy
Duration: Jul 19 2020Jul 23 2020

Publication series

NameInternational Conference on Transparent Optical Networks
Volume2020-July
ISSN (Electronic)2162-7339

Conference

Conference22nd International Conference on Transparent Optical Networks, ICTON 2020
CountryItaly
CityBari
Period7/19/207/23/20

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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