Condition Monitoring of Induction Slip Motors in High 50 Hz Noise Environments

Xintian Chi*, Nicholas A J Lieven, Alex Niciecki, Duncan Affleck

*Corresponding author for this work

Research output: Contribution to conferenceConference Paper

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Abstract

Beran Instruments Limited have been monitoring induction slip motors for over 20 years in high electrical noise environments. Due to the high-temperature environment of certain customer installations, integrated electronics piezo-electric (IEPE) sensors are not employed, and charge sensors are installed to monitor the condition of the motors. Over the past 20 years, Beran have used a variety of techniques, including the development of specialist isolated analogue signal conditioning amplifiers, to enable the true vibration signals that occur around the drive frequency (which is coupled to, and therefore affected by, the mains frequency) to be visualised.

Beran Instruments Limited undertook a research and development programme, Machinery Health State Detection (mSTATE) supporting Future Net Zero Energy Generation. The goal of the programme was to develop a new capability to subtract electrical noise from sensor signals and was conducted in partnership with the University of Bristol and EDF Energy Torness Nuclear Power Station, with funding from the United Kingdom’s innovation agency, Innovate UK.

The mSTATE project delivered a novel algorithm that allows complete subtraction of 50 Hz mains frequencies from the charge sensor signals allowing, for the first time, our end users, and future customers the ability to visualise the true vibration signals and the ability to trend machine health over time without the use of specialist and expensive analogue signal conditioning systems.

This paper outlines the history and development of condition monitoring of induction slip motors at Beran Instruments, and how the mSTATE project resulted in a new approach to subtract 50 Hz noise from accelerometer signals using the power of modern signal processing and data architectures.
Original languageEnglish
Publication statusPublished - 25 Oct 2022
EventThe Third Vibration Institute Middle East Training Conference - Sofitel Cairo Nile El Gezirah, Cairo, Egypt
Duration: 24 Oct 202226 Oct 2022
https://www.ritec-eg.com/VI-MEconf2022/VIMECONF-2022.pdf

Conference

ConferenceThe Third Vibration Institute Middle East Training Conference
Abbreviated titleVIMECONF-2022
Country/TerritoryEgypt
CityCairo
Period24/10/2226/10/22
Internet address

Keywords

  • Vibration monitoring
  • Condition monitoring
  • Induction motors
  • Electrical noise
  • Rotating machinery
  • Machine diagnostics
  • Data analysis

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