Fibre Bragg Grating (FBG) thermal monitoring system for copper windings of electric machines under different duty modes

Kun Shang, Michael Galea, Vladimir Brusic, Weiduo Zhao, Yaping Zhang

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

We developed a prototype of Fibre Bragg Grating (FBG) thermal sensor system and deployed it in a real-time radial thermal profiling of electric machine (EM) copper windings. Two EM duty type regimes were simulated using an experimental EM motorette framework. The thermal tests were performed using an experimental setup consisting of an FBG interrogator, FBG temperature sensors, a motorette frame with embedded windings, and a power supply. We constructed a lumped parameter thermal network (LPTN) model of the motorette and used it for the analysis of FBG measurement and compared them with the model results for performance validation. The comparison of experimental FBG measurements with the LPTN model results show a good agreement - all results were within the range of expected experimental error. The results suggest that our FBG sensor system can be used for thermal monitoring of multiple duty types of EM windings. The system achieved sensing spatial resolution of 8 mm, the maximum sensing frequency of 1kHz, and stable linear temperature sensitivity of 0.091 °C/pm.

Original languageEnglish
Title of host publicationInternational Conference on Sensors and Instruments, ICSI 2021
EditorsWei Wei, Fengjie Cen
PublisherSPIE
ISBN (Electronic)9781510646216
DOIs
Publication statusPublished - 2021
EventInternational Conference on Sensors and Instruments, ICSI 2021 - Qingdao, China
Duration: 28 May 202130 May 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11887
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Conference on Sensors and Instruments, ICSI 2021
Country/TerritoryChina
CityQingdao
Period28/05/2130/05/21

Keywords

  • Copper winding
  • Electric machine
  • FBG sensor
  • Lumped parameter thermal network (LPTN)
  • Thermal monitoring

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Fibre Bragg Grating (FBG) thermal monitoring system for copper windings of electric machines under different duty modes'. Together they form a unique fingerprint.

Cite this