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## Online temperature monitoring

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Condition Monitoring of Rotating Electrical Machines — Recommend this title to your library

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This chapter shows that temperature measurement yields valuable bulk indications of the condition of an electrical machine using simple sensors and narrow bandwidth (<1 Hz), low data rate signals and, because temperature limits the rating of a machine, overtemperature is a valuable CM signal. Temperature detection has repeatedly been shown to be an effective global monitoring technique for electrical machines, but has been neglected as a monitoring method. An important conclusion of this work is that the availability of new FBG temperature sensors gives the potential for much greater distributed electrical machine temperature measurements.

Chapter Contents:

• 6.1 Introduction
• 6.2 Local temperature measurement
• 6.3 Hot-spot measurement and thermal images
• 6.4 Bulk measurement
• 6.5 Conclusions

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