Condition monitoring of DC link electrolytic capacitors in adjustable speed drives

Myungchul Kim, Kwangwoon Lee, Jangho Yoon, Sang Bin Lee, Jiyoon Yoo

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

9 Citations (Scopus)

Abstract

A new sensorless technique for monitoring the condition of inverter dc link aluminum electrolytic capacitors based on equivalent series resistance, ESR, and capacitance, C, estimation is proposed in this paper. The main concept of the proposed method is to estimate ESR and C of the capacitor using the inverter whenever the motor is stopped. The parameters are estimated from the dc link voltage and stator current measurements available in the inverter with the switched dc link voltage applied to the motor stator winding. The temperature of the capacitor can also be estimated under thermal equilibrium based on the stator resistance estimate to take the influence of temperature variation into account. An experimental study on a 250W permanent magnet synchronous motor performed under accelerated capacitor degradation is presented to verify the proposed technique. It is shown that the proposed method provides a reliable and sensitive indication of capacitor aging without additional hardware requirements.

Original languageEnglish
Title of host publicationConference Record of the 2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages237-243
Number of pages7
ISBN (Print)1424403642, 9781424403646
DOIs
Publication statusPublished - 2007
Event2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS - New Orleans, LA, United States
Duration: 2007 Sep 232007 Sep 27

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
ISSN (Print)0197-2618

Other

Other2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS
CountryUnited States
CityNew Orleans, LA
Period07/9/2307/9/27

Keywords

  • Adjustable speed drive
  • Aluminum electrolytic capcitor
  • Capacitane
  • Condition monitoring
  • Dc link capacitor
  • Diagnostics
  • Electrolyte
  • Equivalent Series Resistance (ESR)
  • Stator resistance estimation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Kim, M., Lee, K., Yoon, J., Lee, S. B., & Yoo, J. (2007). Condition monitoring of DC link electrolytic capacitors in adjustable speed drives. In Conference Record of the 2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS (pp. 237-243). [4347792] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/07ias.2007.43